Medium severity · published Oct 17, 2026
CVE-2026-111903
phpMyFAQ 4.2.0-alpha before 4.2.0-beta Stored XSS via SVG DTD Entity Bypass
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains a stored cross-site scripting vulnerability in SvgSanitizer that allows users with FAQ_EDIT permission to bypass sanitization using XML DTD custom entities. Attackers can upload an SVG defining an entity that expands to javascript in an anchor href, executing script when viewers click it to hijack admin sessions.
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
4.2.0-alpha before 4.2.0-beta · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111903
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111903
github.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-j3v5-p957-w6gq
www.vulncheck.com
https://www.vulncheck.com/advisories/phpmyfaq-4.2.0-alpha-before-4.2.0-beta-stored-xss-via-svg-dtd-entity-bypass
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