Skip to main content

phpMyFAQ CVE-2026-85593

| EUVDEUVD-2026-71016 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-09-04 VulnCheck GHSA-2xm9-x25x-7x5q
XSS Phpmyfaq Thorsten
5.1
CVSS 4.0 · Vendor: VulnCheck
Share

Severity by source

Vendor (VulnCheck) PRIMARY
5.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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
vuln.today AI
5.4 MEDIUM

Network-accessible app, low-privilege editor account required (PR:L), victim must view the page (UI:R), scope change to other users' browsers (S:C); no availability impact.

3.1 AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

2
Patch available
Sep 04, 2026 - 13:02 EUVD
Analysis Generated
Sep 04, 2026 - 12:22 vuln.today

DescriptionCVE.org

phpMyFAQ versions before 4.1.8 contain a stored cross-site scripting vulnerability in FaqHelper::convertOldInternalLinks() that calls html_entity_decode() on sanitized FAQ content, reversing entity-encoding protection. Authenticated users with FAQ editing privileges can inject JavaScript payloads that execute in the browsers of all users viewing the affected FAQ pages.

AnalysisAI

Stored cross-site scripting in phpMyFAQ before 4.1.8 allows authenticated FAQ editors to plant persistent JavaScript payloads that execute in every visitor's browser. The root cause is FaqHelper::convertOldInternalLinks() calling html_entity_decode() on content that was previously sanitized via entity encoding - effectively undoing the protection and re-introducing executable HTML. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Persist
technique details hidden
Impact
technique details hidden
Sign in to reveal

Vulnerability AssessmentAI

Exploitation Exploitation requires an attacker to hold a phpMyFAQ account with FAQ editing privileges (PR:L). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 base score of 5.1 (Medium) reflects the authentication gate (PR:L - FAQ editing privileges required) and passive victim interaction (UI:P - viewing the page), which meaningfully reduce exploitability compared to unauthenticated or zero-interaction XSS. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade phpMyFAQ to version 4.1.8 or later, which resolves the decode-after-sanitize flaw in FaqHelper::convertOldInternalLinks(). … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Phpmyfaq

View all
CVE-2023-5865 CRITICAL POC
9.8 Oct 31

Insufficient Session Expiration in GitHub repository thorsten/phpmyfaq prior to 3.2.2. Rated critical severity (CVSS 9.8
CVE-2023-1886 CRITICAL POC
9.8 Apr 05

Authentication Bypass by Capture-replay in GitHub repository thorsten/phpmyfaq prior to 3.1.12. Rated critical severity

CVE-2023-1753 CRITICAL POC
9.8 Mar 31

Weak Password Requirements in GitHub repository thorsten/phpmyfaq prior to 3.1.12. Rated critical severity (CVSS 9.8), t
CVE-2022-3754 CRITICAL POC
9.8 Oct 29

Weak Password Requirements in GitHub repository thorsten/phpmyfaq prior to 3.1.8. Rated critical severity (CVSS 9.8), th
CVE-2026-46364 CRITICAL POC
9.3 May 15

Unauthenticated SQL injection in phpMyFAQ before 4.1.2 allows remote attackers to extract credentials, admin tokens, and
CVE-2017-15730 HIGH POC
8.8 Oct 22

In phpMyFAQ before 2.9.9, there is Cross-Site Request Forgery (CSRF) in admin/stat.ratings.php. Rated high severity (CVS
CVE-2017-15808 HIGH POC
8.8 Oct 23

In phpMyFaq before 2.9.9, there is CSRF in admin/ajax.config.php. Rated high severity (CVSS 8.8), this vulnerability is

CVE-2017-15735 HIGH POC
8.8 Oct 22

In phpMyFAQ before 2.9.9, there is Cross-Site Request Forgery (CSRF) for modifying a glossary. Rated high severity (CVSS
CVE-2017-15734 HIGH POC
8.8 Oct 22

In phpMyFAQ before 2.9.9, there is Cross-Site Request Forgery (CSRF) in admin/stat.main.php. Rated high severity (CVSS 8
CVE-2024-28107 HIGH POC
8.8 Mar 25

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. Rated high severi
CVE-2024-27299 HIGH POC
8.8 Mar 25

phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. Rated high severi
CVE-2023-1762 HIGH POC
8.8 Mar 31

Improper Privilege Management in GitHub repository thorsten/phpmyfaq prior to 3.1.12. Rated high severity (CVSS 8.8), th

Same weakness CWE-79 – Cross-site Scripting (XSS)

View all
CVE-2020-3580 MEDIUM POC
6.1
CVE-2013-7389 MEDIUM POC
4.3
CVE-2021-25299 MEDIUM POC
6.1
CVE-2014-2120 MEDIUM
6.1
CVE-2023-40000 HIGH POC
8.3
CVE-2016-8581 MEDIUM POC
6.1
CVE-2013-5223 MEDIUM POC
5.4
CVE-2025-52367 MEDIUM POC
5.4

Same technique XSS

View all
CVE-2017-9248 CRITICAL POC
9.8
CVE-2020-3580 MEDIUM POC
6.1
CVE-2013-1710 CRITICAL POC
10.0
CVE-2013-7389 MEDIUM POC
4.3
CVE-2021-25299 MEDIUM POC
6.1
CVE-2014-2120 MEDIUM
6.1
CVE-2023-40000 HIGH POC
8.3
CVE-2024-52875 HIGH POC
8.8

Share

CVE-2026-85593 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy