CVE-2026-34728 json
phpMyFAQ: Path Traversal - Arbitrary File Deletion in MediaBrowserController
published 2026-04-01 7 mo ago modified 2026-10-26 13 d ago also EUVD-2026-18258 , GHSA-38m8-xrfj-v38x
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the MediaBrowserController::index() method handles file deletion for the media browser. When the fileRemove action is triggered, the user-supplied name parameter is concatenated with the base upload directory path without any path traversal validation. The FILTER_SANITIZE_SPECIAL_CHARS filter only encodes HTML special characters (&, ', ", <, >) and characters with ASCII value < 32, and does not prevent directory traversal sequences like ../. Additionally, the endpoint does not validate CSRF tokens, making it exploitable via CSRF attacks. This issue has been patched in version 4.1.1.
Patch / fix
- packagist phpmyfaq/phpmyfaq 4.1.1
- phpmyfaq phpmyfaq 4.1.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H |
| GitHub | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | phpmyfaq/phpmyfaq | <4.1.1 |
4.1.1 |
Affected products
- thorsten phpMyFAQ
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
exploit, web, mitigation, vendor-advisory
-
github.com
/thorsten/phpMyFAQ/releases/tag/4.1.1
web, product
-
nvd.nist.gov
/vuln/detail/CVE-2026-34728
advisory
-
github.com
/thorsten/phpMyFAQ
package
Sources
- CVE List CVE-2026-34728
- GitHub Advisory GHSA-38m8-xrfj-v38x
- NVD CVE-2026-34728
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.