phpMyAdmin through 5.2.3 contains a missing re-authentication vulnerability that allows authenticated attackers to remove two-factor…
CVE-2026-119429
phpMyAdmin through 5.2.3 contains a missing re-authentication vulnerability that allows authenticated attackers to remove two-factor authentication by posting the 2fa key to /config/set. Attackers holding a hijacked session can submit key=2fa with a null JSON value to SetConfigController, stripping 2FA so later logins require only the MySQL password.
Assessment
- CVSS
- 5.3 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 30 October 2026
- Last updated
- 3 November 2026
- Weakness
- CWE-620
- Assigner
- disclosure@vulncheck.com
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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
At the source
References
- https://abraxaslabs.tech/research/phpmyadmin-config-set-2fa
- https://github.com/phpmyadmin/phpmyadmin
- https://github.com/phpmyadmin/phpmyadmin/blob/RELEASE_5_2_3/libraries/classes/Controllers/Config/SetConfigController.php#L29-L41
- https://github.com/phpmyadmin/phpmyadmin/commit/6482dfa28bd56d515f482b008b194a516646fe1b
- https://github.com/phpmyadmin/phpmyadmin/commit/b2a3e41f1e9ce42d1ee3f07a91f476029987799f
- https://github.com/phpmyadmin/phpmyadmin/pull/19087
- https://www.vulncheck.com/advisories/phpmyadmin-through-5.2.3-two-factor-authentication-removal-via-config-set
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