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CVE archive

2021 CVE Archive

Browse CVE records published in 2021 CVE Archive, with severity, affected products, CWE, KEV, and source-backed vulnerability context.

Showing 50 of 22591 matching CVEs · Page 12 of 452.

Medium · CVSS 6.9

CVE-2021-47715: Hasura GraphQL 1.3.3 Server-Side Request Forgery via Remote Schema Injection

Hasura GraphQL 1.3.3 contains a server-side request forgery vulnerability that allows attackers to inject arbitrary remote schema URLs through the add_remote_schema endpoint. Attackers can exploit the vulnerability by sending crafted POST requests to the /v1/query endpoint with malicious URL definitions to potentially access internal network resources.

Published Dec 22, 2025 · Updated May 24, 2026

Unknown · CVSS Not scored

CVE-2021-46917: dmaengine: idxd: fix wq cleanup of WQCFG registers

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix wq cleanup of WQCFG registers A pre-release silicon erratum workaround where wq reset does not clear WQCFG registers was leaked into upstream code. Use wq reset command instead of blasting the MMIO region. This also address an issue where we clobber registers in future devices.

Published Feb 27, 2024 · Updated May 23, 2026

Unknown · CVSS Not scored

CVE-2021-46905: net: hso: fix NULL-deref on disconnect regression

In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().

Published Feb 25, 2024 · Updated May 23, 2026

Medium · CVSS 6.7

CVE-2021-21508: Dell VxRail versions before 7.0.200 contain a Plain-text Password Storage Vulnerability in VxRail Manager.

Dell VxRail versions before 7.0.200 contain a Plain-text Password Storage Vulnerability in VxRail Manager. A sys-admin user may exploit this vulnerability, leading to the disclosure of certain user credentials. The attacker may be able to use the exposed credentials to access the vulnerable application with privileges of the compromised account.

Published May 22, 2026 · Updated May 22, 2026

High · CVSS 8.7

CVE-2021-47942: Home Assistant Community Store 1.10.0 Path Traversal Account Takeover

Home Assistant Community Store (HACS) 1.10.0 contains a path traversal vulnerability that allows unauthenticated attackers to read sensitive files by traversing directories via the /hacsfiles/ endpoint. Attackers can retrieve the .storage/auth file containing user credentials and refresh tokens, then craft valid JWT tokens to gain administrative access to Home Assistant instances.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.7

CVE-2021-47969: Color Notes 1.4 Denial of Service via Long Character String

Color Notes 1.4 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350,000 repeated characters and paste it twice into a new note to cause the application to stop responding.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.7

CVE-2021-47971: My Notes Safe 5.3 Denial of Service via Buffer Overflow

My Notes Safe 5.3 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.8

CVE-2021-47954: LayerBB 1.1.4 SQL Injection via search_query Parameter

LayerBB 1.1.4 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the search_query parameter. Attackers can send POST requests to /search.php with malicious search_query values using CASE WHEN statements to extract sensitive database information.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.7

CVE-2021-47972: Sticky Notes & Color Widgets 1.4.2 Denial of Service

Sticky Notes & Color Widgets 1.4.2 contains a denial of service vulnerability that allows attackers to crash the application by creating notes with excessively long character strings. Attackers can paste large payloads of repeated characters into note fields to trigger application crashes and make the application stop responding.

Published May 16, 2026 · Updated May 18, 2026

Medium · CVSS 6.9

CVE-2021-47978: ProcessMaker 3.5.4 Local File Inclusion via Path Traversal

ProcessMaker 3.5.4 contains a local file inclusion vulnerability that allows unauthenticated attackers to read arbitrary files by exploiting improper path traversal validation. Attackers can send requests with directory traversal sequences to access sensitive system files like /etc/passwd without authentication.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.8

CVE-2021-47976: TextPattern CMS 4.9.0-dev Authenticated Remote Code Execution via Plugin Upload

TextPattern CMS 4.9.0-dev contains a remote code execution vulnerability that allows authenticated attackers to upload arbitrary PHP files by exploiting the plugin upload functionality. Attackers can authenticate, retrieve a CSRF token from the plugin event page, and upload malicious PHP files to the textpattern/tmp/ directory for code execution.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.8

CVE-2021-47964: Schlix CMS 2.2.6-6 Remote Code Execution via core.blockmanager

Schlix CMS 2.2.6-6 contains a remote code execution vulnerability that allows authenticated attackers to execute arbitrary PHP code by uploading malicious extension packages through the block manager. Attackers can upload a crafted ZIP file containing PHP code in the packageinfo.inc file and trigger execution by accessing the About tab of the installed extension.

Published May 15, 2026 · Updated May 18, 2026

High · CVSS 8.5

CVE-2021-47974: VX Search 13.5.28 Unquoted Service Path Privilege Escalation

VX Search 13.5.28 contains an unquoted service path vulnerability in both VX Search Server and VX Search Enterprise services that allows local attackers to escalate privileges. Attackers can place malicious executables in unquoted path directories like C:\Program Files\VX Search to execute arbitrary code with LocalSystem privileges when services restart.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 7.1

CVE-2021-47980: Fuel CMS 1.4.13 Blind SQL Injection via col Parameter

Fuel CMS 1.4.13 contains a blind SQL injection vulnerability that allows authenticated attackers to manipulate database queries by injecting SQL code through the 'col' parameter in the Activity Log interface. Attackers can send requests to the logs endpoint with malicious SQL payloads in the 'col' parameter to extract database information based on response time delays.

Published May 16, 2026 · Updated May 18, 2026

Medium · CVSS 6.9

CVE-2021-47934: MyBB Timeline Plugin 1.0 Cross-Site Scripting and CSRF

MyBB Timeline Plugin 1.0 contains cross-site scripting vulnerabilities that allow attackers to inject malicious scripts through thread titles, post content, and user profile fields like Location and Bio. Attackers can also exploit a cross-site request forgery vulnerability in the timeline.php profile action to change a user's cover picture by crafting malicious forms that execute when victims visit affected profiles.

Published May 16, 2026 · Updated May 18, 2026

High · CVSS 8.7

CVE-2021-47973: Sticky Notes Widget 3.0.6 Denial of Service via Buffer Overflow

Sticky Notes Widget 3.0.6 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash on iOS devices.

Published May 16, 2026 · Updated May 18, 2026

Medium · CVSS 6.1

CVE-2021-4195: XSS in Firmanet Software and Technology Customer Relation Manager

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Firmanet Software and Technology Customer Relation Manager allows XSS Targeting HTML Attributes. This issue affects Customer Relation Manager: before 2022.03.13.

Published Mar 14, 2023 · Updated May 18, 2026

Medium · CVSS 6.5

CVE-2021-45478: IDOR in Yordam Library Automation System

Improper Handling of Parameters vulnerability in Bordam Information Technologies Library Automation System allows Collect Data as Provided by Users. This issue affects Library Automation System: before 19.2.

Published Mar 2, 2023 · Updated May 18, 2026

Medium · CVSS 5.4

CVE-2021-45479: XSS in Yordam Library Automation System

Improper Neutralization of Input During Web Page Generation vulnerability in Yordam Information Technologies Library Automation System allows Stored XSS. This issue affects Library Automation System: before 19.2.

Published Mar 2, 2023 · Updated May 18, 2026

Medium · CVSS 6.5

CVE-2021-45477: IDOR in Yordam Library Automation System

Improper Handling of Parameters vulnerability in Bordam Information Technologies Library Automation System allows Collect Data as Provided by Users. This issue affects Library Automation System: before 19.2.

Published Mar 2, 2023 · Updated May 18, 2026

High · CVSS 8.6

CVE-2021-44793: Information Leakege via Unauthorized Access in Single Connect

Single Connect does not perform an authorization check when using the sc-reports-ui" module. A remote attacker could exploit this vulnerability to access the device configuration page and export the data to an external file. The exploitation of this vulnerability might allow a remote attacker to obtain sensitive information including the database credentials. Since the database runs with high privileges it is possible to execute commands with the attained credentials.

Published Jan 27, 2022 · Updated May 18, 2026

Medium · CVSS 5.3

CVE-2021-44794: Information Leakege via Unauthorized Access in Single Connect

Single Connect does not perform an authorization check when using the "sc-diagnostic-ui" module. A remote attacker could exploit this vulnerability to access the device information page. The exploitation of this vulnerability might allow a remote attacker to obtain sensitive information.

Published Jan 27, 2022 · Updated May 18, 2026

Medium · CVSS 5.3

CVE-2021-44795: Modifying User Permissions via Unauthorized Access in Single Connect

Single Connect does not perform an authorization check when using the "sc-assigned-credential-ui" module. A remote attacker could exploit this vulnerability to modify users permissions. The exploitation of this vulnerability might allow a remote attacker to delete permissions from other users without authenticating.

Published Jan 27, 2022 · Updated May 18, 2026

Medium · CVSS 5.3

CVE-2021-44792: Information Leakege via Unauthorized Access in Single Connect

Single Connect does not perform an authorization check when using the "log-monitor" module. A remote attacker could exploit this vulnerability to access the logging interface. The exploitation of this vulnerability might allow a remote attacker to obtain sensitive information.

Published Jan 27, 2022 · Updated May 18, 2026

High · CVSS 8.8

CVE-2021-3855: Command Injection in Liman Central Management System

Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in Liman Central Management System Liman MYS (HTTP/Controllers, CronMail, Jobs modules) allows Command Injection. This issue affects Liman Central Management System: from 1.7.0 before 1.8.3-462.

Published Feb 24, 2023 · Updated May 18, 2026

Critical · CVSS 9.8

CVE-2021-3854: SQLi in Glox Technology's Useroam Hotspot

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Glox Technology Useroam Hotspot allows SQL Injection. This issue affects Useroam Hotspot: before 5.1.0.15.

Published Mar 2, 2023 · Updated May 18, 2026

Critical · CVSS 9.6

CVE-2021-3825: Missing Authorization Checks in LiderAhenk

On 2.1.15 version and below of Lider module in LiderAhenk software is leaking it's configurations via an unsecured API. An attacker with an access to the configurations API could get valid LDAP credentials.

Published Oct 1, 2021 · Updated May 18, 2026

Medium · CVSS 5.3

CVE-2021-3806: Path Traversal in Pardus Software Center

A path traversal vulnerability on Pardus Software Center's "extractArchive" function could allow anyone on the same network to do a man-in-the-middle and write files on the system.

Published Sep 18, 2021 · Updated May 18, 2026

Medium · CVSS 5.3

CVE-2021-47958: CouchCMS 2.2.1 Server-Side Request Forgery via SVG upload

CouchCMS 2.2.1 contains a server-side request forgery vulnerability that allows authenticated attackers to make arbitrary HTTP requests by uploading malicious SVG files. Attackers can upload SVG files containing external entity references through the browse.php endpoint to access internal services and resources.

Published May 15, 2026 · Updated May 15, 2026

High · CVSS 8.8

CVE-2021-47966: PHP Timeclock 1.04 SQL Injection via login.php

PHP Timeclock 1.04 contains time-based and boolean-based blind SQL injection vulnerabilities in the login_userid parameter of login.php that allows unauthenticated attackers to extract database contents. Attackers can submit crafted POST requests with SQL payloads using SLEEP functions or RLIKE conditional statements to dump sensitive database information including employee names and credentials.

Published May 15, 2026 · Updated May 15, 2026

High · CVSS 8.7

CVE-2021-47959: WordPress Plugin WPGraphQL 1.3.5 Denial of Service

WordPress Plugin WPGraphQL 1.3.5 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server resources by sending batched GraphQL queries with duplicated fields. Attackers can send POST requests to the GraphQL endpoint with amplified field duplication payloads to trigger server out-of-memory conditions and MySQL connection errors.

Published May 15, 2026 · Updated May 15, 2026

Critical · CVSS 9.8

CVE-2021-47965: WordPress Plugin WP Super Edit 2.5.4 Unrestricted File Upload

WordPress Plugin WP Super Edit 2.5.4 and earlier contains an unrestricted file upload vulnerability in the FCKeditor component that allows attackers to upload dangerous file types without validation. Attackers can upload arbitrary files through the filemanager upload endpoint to achieve remote code execution and complete system compromise.

Published May 15, 2026 · Updated May 15, 2026

High · CVSS 8.7

CVE-2021-47749: YouPHPTube <= 7.8 - Directory Traversal

YouPHPTube <= 7.8 contains a local file inclusion vulnerability that allows unauthenticated attackers to access arbitrary files by manipulating the 'lang' parameter in GET requests. Attackers can exploit the path traversal flaw in locale/function.php to include and view PHP files outside the intended directory by using directory traversal sequences.

Published Jan 13, 2026 · Updated May 14, 2026

Critical · CVSS 9.8

CVE-2021-4473: Tianxin Internet Behavior Management System Command Injection via toQuery.php

Tianxin Internet Behavior Management System contains a command injection vulnerability in the Reporter component endpoint that allows unauthenticated attackers to execute arbitrary commands by supplying a crafted objClass parameter containing shell metacharacters and output redirection. Attackers can exploit this vulnerability to write malicious PHP files into the web root and achieve remote code execution with the privileges of the web server process. This vulnerability has been fixed in version NACFirmware_4.0.0.7_20210716.180815_topsec_0_basic.bin. Exploitation evidence was first observed by the Shadowserver Foundation on 2024-06-01 (UTC).

Published Apr 7, 2026 · Updated May 14, 2026

High · CVSS 8.7

CVE-2021-4463: Longjing Technology BEMS API <= 1.21 Remote Arbitrary File Download

Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.

Published Nov 12, 2025 · Updated May 14, 2026

Medium · CVSS 4.8

CVE-2021-47870: GetSimple CMS My SMTP Contact Plugin 1.1.2 - Stored XSS

GetSimple CMS My SMTP Contact Plugin 1.1.2 suffers from a Stored Cross-Site Scripting (XSS) vulnerability. The plugin attempts to sanitize user input using htmlspecialchars(), but this can be bypassed by passing dangerous characters as escaped hex bytes. This allows attackers to inject arbitrary client-side code that executes in the administrator's browser when visiting a malicious page.

Published Jan 21, 2026 · Updated May 12, 2026

Unknown · CVSS Not scored

CVE-2021-47002: SUNRPC: Fix null pointer dereference in svc_rqst_free()

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix null pointer dereference in svc_rqst_free() When alloc_pages_node() returns null in svc_rqst_alloc(), the null rq_scratch_page pointer will be dereferenced when calling put_page() in svc_rqst_free(). Fix it by adding a null check. Addresses-Coverity: ("Dereference after null check")

Published Feb 28, 2024 · Updated May 12, 2026

Unknown · CVSS Not scored

CVE-2021-4090: An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel.

An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat.

Published Feb 18, 2022 · Updated May 12, 2026

High · CVSS 8.7

CVE-2021-47944: memono Notepad 4.2 Denial of Service via Buffer Overflow

memono Notepad 4.2 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character buffers into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash on iOS devices.

Published May 10, 2026 · Updated May 12, 2026

High · CVSS 8.8

CVE-2021-47937: e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload

e107 CMS 2.3.0 contains a remote code execution vulnerability that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files. Attackers can upload a crafted theme package through the theme.php endpoint that deploys a web shell to the e107_themes directory, then execute system commands via the payload.php script.

Published May 10, 2026 · Updated May 12, 2026

High · CVSS 8.8

CVE-2021-47930: Balbooa Joomla Forms Builder 2.0.6 SQL Injection Unauthenticated

Balbooa Joomla Forms Builder 2.0.6 contains an unauthenticated SQL injection vulnerability in the form submission handler that allows remote attackers to execute arbitrary SQL queries. Attackers can send POST requests to the com_baforms component with malicious JSON payloads in the 'id' field parameter to extract sensitive database information.

Published May 10, 2026 · Updated May 12, 2026