TI-2026-34077 Aliases CVE-2026-46360 GHSA-whqh-9pq5-c7r3

phpMyFAQ - Stored XSS via Entity Decoding Depth Limit Bypass in SVG Sanitizer

MEDIUM 56CWE-79Published 2026-05-15 · Updated 2026-05-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in SvgSanitizer::decodeAllEntities() that limits recursive entity decoding to 5 iterations, allowing attackers to bypass sanitization. Authenticated users with FAQ_EDIT permission can upload malicious SVG files with deeply nested ampersand encoding around numeric HTML entities to reconstruct javascript: URLs, which execute arbitrary JavaScript when clicked by other users viewing the uploaded SVG.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00187 8th percentileScored 2026-11-07

Fix Fixed phpmyfaq (thorsten): 4.1.2phpmyfaq/phpmyfaq (Packagist): 4.1.2+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
thorsten	phpmyfaq	before 4.1.2	4.1.2	Patch available	CNA
—	phpmyfaq/phpmyfaq (Packagist)	before 4.1.2	4.1.2	Patch available	GHSA-whqh-9pq5-c7r3
—	thorsten/phpmyfaq (Packagist)	before 4.1.2	4.1.2	Patch available	GHSA-whqh-9pq5-c7r3

phpmyfaq Vendorthorsten Affected before 4.1.2 Fixed in 4.1.2 Patch available CNA
phpmyfaq/phpmyfaq (Packagist) Vendor— Affected before 4.1.2 Fixed in 4.1.2 Patch available GHSA-whqh-9pq5-c7r3
thorsten/phpmyfaq (Packagist) Vendor— Affected before 4.1.2 Fixed in 4.1.2 Patch available GHSA-whqh-9pq5-c7r3

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:phpmyfaq:phpmyfaq::::::::	—	—	thorsten

cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:* Versions — — ·thorsten

Remediation

Fix · CNA phpmyfaq (thorsten) Fixed in 4.1.2
Fix · GHSA-whqh-9pq5-c7r3 phpmyfaq/phpmyfaq (Packagist) Fixed in 4.1.2 Advisory →
Fix · GHSA-whqh-9pq5-c7r3 thorsten/phpmyfaq (Packagist) Fixed in 4.1.2 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-05-15
thorsten phpmyfaq 4.1.2
13 records Highest priority Priority HIGH 5 HIGH, 8 MEDIUM
Other records, highest priority first
- TI-2026-32868 phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check EndpointPriority HIGH 81
- TI-2026-34083 phpMyFAQ - Unauthenticated Information Disclosure via getIdFromSolutionId Permission BypassPriority HIGH 77
- TI-2026-34084 phpMyFAQ - Stored XSS via Utils::parseUrl() in Comment RenderingPriority HIGH 69
Show all 13 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-46360
2026-10-03 Alias added: GHSA-whqh-9pq5-c7r3

References

Advisory 2

Other 1

https://github.com/thorsten/phpMyFAQ

TI-2023-00296 Improper Authentication in thorsten/phpmyfaq CVSS 3.1CRITICAL 9.8
TI-2026-76118 Authentication bypass in phpMyFAQ via WebAuthn credential injection CVSS 4.0CRITICAL 9.3
TI-2026-32868 phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint CVSS 4.0CRITICAL 9.3
TI-2026-76108 Unauthenticated denial of service in phpMyFAQ API pagination CVSS 4.0HIGH 8.7
TI-2026-53313 phpMyFAQ 3.1.0 through 4.1.6 Authentication Bypass via LDAP CVSS 4.0HIGH 8.8
TI-2026-34083 phpMyFAQ - Unauthenticated Information Disclosure via getIdFromSolutionId Permission Bypass CVSS 4.0HIGH 8.7

See all 224 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences