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Vulnerability details: VCID-a9tb-yj7x-pya1
Vulnerability ID VCID-a9tb-yj7x-pya1
Aliases CVE-2026-34728
GHSA-38m8-xrfj-v38x
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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.0009 https://api.first.org/data/v1/epss?cve=CVE-2026-34728
epss 0.0009 https://api.first.org/data/v1/epss?cve=CVE-2026-34728
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-38m8-xrfj-v38x
cvssv3.1 8.7 https://github.com/thorsten/phpMyFAQ
generic_textual HIGH https://github.com/thorsten/phpMyFAQ
cvssv3.1 8.7 https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
generic_textual HIGH https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
ssvc Track* https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
cvssv3.1 8.7 https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
cvssv3.1_qr HIGH https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
generic_textual HIGH https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
ssvc Track* https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
cvssv3.1 8.7 https://nvd.nist.gov/vuln/detail/CVE-2026-34728
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-34728
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-34728
https://github.com/thorsten/phpMyFAQ
https://nvd.nist.gov/vuln/detail/CVE-2026-34728
4.1.1 https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
GHSA-38m8-xrfj-v38x https://github.com/advisories/GHSA-38m8-xrfj-v38x
GHSA-38m8-xrfj-v38x https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H Found at https://github.com/thorsten/phpMyFAQ
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H Found at https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-02T15:23:57Z/ Found at https://github.com/thorsten/phpMyFAQ/releases/tag/4.1.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H Found at https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-02T15:23:57Z/ Found at https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-38m8-xrfj-v38x
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-34728
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.25492
EPSS Score 0.0009
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:47:21.270060+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/34xxx/CVE-2026-34728.json 38.6.0