phpMyFAQ 3.2.0 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta IDOR Leaks TOTP Secret via /admin/api/user/data

published 2026-10-17 22 d ago modified 2026-10-21 18 d ago also EUVD-2026-103315

cvss: 6.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits: 0; none known

phpMyFAQ 3.2.0 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an insecure direct object reference vulnerability in GET /admin/api/user/data/{userId}, which returns any user's full faquserdata row, including the live TOTP secret, without a SuperAdmin or protected-target check. Delegated administrators with user-management rights can read a SuperAdmin's TOTP secret and generate valid codes to bypass two-factor authentication.

Patch / fix

fixed in 1

thorsten phpMyFAQ 4.1.9, 4.2.0-beta

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 18 d ago (2026-10-21)

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-hp8j-w94m-j5c7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	7.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
CNA	3.1	6.0	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L
CNA	4.0	7.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/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 products

thorsten phpMyFAQ

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

References

github.com /thorsten/phpMyFAQ/security/advisories/GHSA-hp8j-w94m-j5c7
vendor-advisory, exploit
vulncheck.com /advisories/phpmyfaq-3.2.0-before-4.1.9-and-4.2.0-alpha-before-4.2.0-beta-idor-leaks-totp-secret-via-admin-api
third-party-advisory

Sources

CVE List CVE-2026-111905
NVD CVE-2026-111905

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.

Summary