CVE-2026-46363 json
phpMyFAQ - Stored XSS in FAQ Question/Answer via Encode-Decode Bypass
published 2026-05-06 6 mo ago modified 2026-11-08 27 h ago also EUVD-2026-30598 , GHSA-f5p7-2c9q-8896
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in FAQ creation and update endpoints that bypass sanitization through encode-decode cycles. The vulnerability allows authenticated attackers with FAQ_ADD permission to inject malicious script tags via question or answer parameters, which execute in every visitor's browser when FAQ content is rendered with the raw Twig filter.
Patch / fix
- packagist phpmyfaq/phpmyfaq 4.1.2
- packagist thorsten/phpmyfaq 4.1.2
- thorsten phpmyfaq 4.1.2
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-f5p7-2c9q-8896 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.1 | 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 |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 4.0 | 5.1 | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | phpmyfaq/phpmyfaq | <4.1.2 |
4.1.2 |
| packagist | thorsten/phpmyfaq | <4.1.2 |
4.1.2 |
Affected products
- thorsten phpmyfaq
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/thorsten/phpMyFAQ/security/advisories/GHSA-f5p7-2c9q-8896
vendor-advisory, exploit, web
-
vulncheck.com
/advisories/phpmyfaq-stored-xss-in-faq-question-answer-via-encode-decode-bypass
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-46363
advisory
-
github.com
/thorsten/phpMyFAQ
package
Sources
- CVE List CVE-2026-46363
- GitHub Advisory GHSA-f5p7-2c9q-8896
- NVD CVE-2026-46363
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