Security readout for executives and security teams
Plain-English summary
Vvveb versions before 1.0.8.3 allow a super administrator to upload a crafted plugin that runs PHP code as the web server user. This can compromise website data, content, credentials, and availability. The initial action requires a highly privileged account, but the uploaded code can subsequently be reached without authentication.
Executive priority
Prioritize remediation for public-facing Vvveb systems and environments holding sensitive data. Treat suspected super_admin compromise as a potential server compromise and investigate promptly. The privilege prerequisite lowers opportunistic risk, but successful exploitation provides complete confidentiality, integrity, and availability impact within the web server account's reach.
Technical view
The plugin upload endpoint insufficiently restricts plugin ZIP contents. A crafted archive containing valid plugin metadata and PHP beneath the plugin's public path can place executable code in a web-accessible location. Accessing that path triggers remote code execution with web server permissions. The issue is classified under CWE-434 and CWE-61 and scores 8.6 under CVSS 4.0.
Likely exposure
Internet-accessible Vvveb installations below 1.0.8.3 are affected when an attacker controls or compromises a super_admin account. Exposure is more consequential where the web server can access sensitive configuration, credentials, customer data, or writable application content. The supplied version metadata is unusual, but the description clearly identifies releases before 1.0.8.3.
Exploitation context
The supplied sources do not establish active exploitation, and the CVE is not identified as a CISA KEV entry. Exploitation requires high privileges for the malicious plugin upload, reducing initial accessibility. However, stolen administrator credentials or a malicious administrator could convert that access into persistent server-side code execution, with later requests to the uploaded path requiring no authentication.
Researcher notes
The provided CVSS 4.0 vector is AV:N/AC:L/AT:N/PR:H/UI:N with high vulnerable-system impacts and no subsequent-system impacts. Public evidence attributes the flaw to unrestricted plugin archive handling and web-accessible PHP placement. The structured affected-version entry contains an atypical commit identifier, so confirm exact version boundaries against the linked release and patch records.
Mitigation direction
- Upgrade affected Vvveb installations to version 1.0.8.3 or later.
- Follow the vendor release notes and patch guidance for deployment details.
- Restrict super_admin access and rotate credentials suspected of compromise.
- Temporarily limit plugin installation privileges until upgrading is complete.
- Review web server permissions to reduce access to sensitive files and services.
Validation and detection
- Confirm the deployed Vvveb version is 1.0.8.3 or later.
- Inventory all accounts holding super_admin privileges and verify their necessity.
- Review plugin directories for unexpected, recently added, or modified PHP files.
- Examine plugin-upload and public-path access logs for suspicious activity.
- Verify the production code contains the vendor's referenced security commit.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-61: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-41937 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/givanz/Vvveb/releases/tag/1.0.8.3CVE reference, VulnCheck · release-notes
- https://github.com/givanz/Vvveb/commit/04f0294350ec429e307cd31c2e777a4797c868d6CVE reference, VulnCheck · patch
- https://www.vulncheck.com/advisories/vvveb-unrestricted-file-upload-rce-via-plugin-uploadCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
UNIX Symbolic Link (Symlink) Following
UNIX Symbolic Link (Symlink) Following represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.