Security readout for executives and security teams
Plain-English summary
CVE-2026-1423 affects code-projects Online Examination System 1.0. An authenticated remote user may abuse /admin_pic.php to upload files without proper restriction. Public exploit information exists, but the source bundle does not show confirmed active exploitation or a vendor patch.
Executive priority
Treat as a targeted application risk, not a broad enterprise emergency. Prioritize if the system is internet-facing, used in production, or accessible by many users. Public exploit disclosure raises urgency for inventory, access restriction, and monitoring.
Technical view
The issue is reported as unrestricted upload in /admin_pic.php, mapped to CWE-434 and CWE-284. CVSS v2 is 6.5 with network access, low complexity, and required authentication. The VulDB entry states public disclosure and possible use; GitHub reference describes unsafe upload leading to remote code execution.
Likely exposure
Exposure is likely limited to organizations running code-projects Online Examination System 1.0, especially internet-accessible deployments where authenticated users can reach the admin picture upload function.
Exploitation context
Public exploit details are referenced, increasing validation urgency. However, KEV is false and the provided sources do not confirm active exploitation in the wild. Authentication is required according to the CVSS vector.
Researcher notes
Evidence is mainly VulDB, CVE metadata, and a public GitHub write-up. The affected function beyond /admin_pic.php is not fully detailed in the bundle. No official patch is named. Avoid assuming other versions or products are affected.
Mitigation direction
- Identify any deployments of code-projects Online Examination System 1.0.
- Check code-projects and VulDB references for vendor guidance or updates.
- Restrict access to administrative upload functions to trusted users and networks.
- Review upload handling controls and block executable file types where feasible.
- Monitor web directories for unexpected uploaded files.
Validation and detection
- Confirm whether /admin_pic.php exists in deployed instances.
- Verify the application version is Online Examination System 1.0.
- Review authentication and authorization around the admin picture upload feature.
- Inspect recent uploads and web logs for suspicious file activity.
- Track CVE and vendor pages for remediation updates.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-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 lookupCVE-2026-1423 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
- Medium
- CVSS
- 6.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
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.
CVSS vector scores
1 official scoreWe 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.
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR86.4Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
6.5MediumVector: AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-342839 | code-projects Online Examination System admin_pic.php unrestricted uploadCVE reference · vdb-entry, technical-description
- VDB-342839 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- Submit #736607 | code-projects Online Examination System 1 Unrestricted UploadCVE reference · third-party-advisory
- https://github.com/geo-chen/code-projects/blob/main/Online%20Examination%20System%20In%20PHP%20With%20Source%20Code.md#finding-3-remote-code-execution-via-unsafe-file-uploadCVE reference · exploit
- https://code-projects.org/CVE reference · product
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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
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.