Medium severity · published Oct 17, 2026
CVE-2026-111894
phpMyFAQ 3.2.1 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Stored XSS via iframe data: URI
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
phpMyFAQ 3.2.1 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains a stored cross-site scripting vulnerability that allows authenticated content authors to inject JavaScript by embedding iframes with data:text/html sources in FAQ or News content. Attackers can bypass the hostless media-host allowlist in FaqHelper::cleanUpContent(), which is rendered via Twig's raw filter, to run phishing interfaces or top-frame redirects for viewers.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpMyFAQ · thorsten
3.2.1 before 4.1.9; 4.2.0-alpha before 4.2.0-beta · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111894
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111894
github.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-fg92-v5rr-4xjq
www.vulncheck.com
https://www.vulncheck.com/advisories/phpmyfaq-3.2.1-before-4.1.9-and-4.2.0-alpha-before-4.2.0-beta-stored-xss-via-iframe-data-uri
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