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VulnerabilityPublished

CVE-2026-56736: thorsten phpMyFAQ · Cross-site Scripting

Affects thorsten phpMyFAQSource CVE Database V5

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Not known to be exploited · CVSS 8.2 High : upgrade to 4.2.0-alpha soon.

Data as of 6 Nov 2026, 23:24 UTC

CVSS 3.1 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.2.0-alpha
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade phpMyFAQ and thorsten/phpMyFAQ to 4.2.0-alpha.

Affected software

ProductAffectedFixed in
thorstenphpMyFAQAffected
  • <4.2.0-alpha
Fixed in
  • 4.2.0-alpha
GitHubthorsten/phpMyFAQpkg:github/thorsten/phpMyFAQOther threatsAffected
  • <4.2.0-alpha
Fixed in
  • 4.2.0-alpha

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade phpMyFAQ to version 4.2.0-alpha or later, where this vulnerability is fixed. No other mitigations are specified or recommended.

Description

phpMyFAQ is an open source FAQ web application. A stored cross-site scripting (XSS) vulnerability in versions prior to 4.2.0-alpha allows any unauthenticated user (or low-privileged registered user) to inject arbitrary JavaScript that executes in an administrator's browser when they review or edit a user-submitted FAQ entry. This leads to admin account takeover via session theft. The vulnerability exists because `html_entity_decode()` converts HTML entities into executable HTML after `strip_tags()` has already passed them through, and the admin template renders the content with Twig's `|raw` filter without any output sanitization. Version 4.2.0-alpha fixes the issue.

References

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