phpMyAdmin through 5.2.3 contains a server-side request forgery vulnerability that allows unauthenticated attackers to trigger outbound connections via setup/validate.php, which lacks the setup-disabled guard. Attackers can POST attacker-chosen host and port values reaching Validator::testDBConnection() to open MySQL-protocol connections and probe internal ports using returned error messages.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/phpmyadmin/phpmyadmin/commit/510e442593af5d4702bbb46cdb45ad51f3a8a9d3 patch
- https://github.com/phpmyadmin/phpmyadmin/commit/126ac3ac5662ed3171ef3646636348fad3f8e952 patch
- https://github.com/phpmyadmin/phpmyadmin/pull/19156 patch, issue-tracking
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.3 · phpmyadminNVD modified 2026-10-30 11:30
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 8
- https://github.com/phpmyadmin/phpmyadmin/commit/510e442593af5d4702bbb46cdb45ad51f3a8a9d3 patch
- https://github.com/phpmyadmin/phpmyadmin/commit/126ac3ac5662ed3171ef3646636348fad3f8e952 patch
- https://github.com/phpmyadmin/phpmyadmin/pull/19156 patch, issue-tracking
- https://github.com/phpmyadmin/phpmyadmin/blob/RELEASE_5_2_3/setup/validate.php#L21-L35 technical-description
- https://github.com/phpmyadmin/phpmyadmin/blob/RELEASE_5_2_3/libraries/classes/Config/Validator.php#L241 technical-description
- https://abraxaslabs.tech/research/phpmyadmin-setup-validate third-party-advisory
- https://github.com/phpmyadmin/phpmyadmin product
- https://www.vulncheck.com/advisories/phpmyadmin-through-5.2.3-ssrf-via-setup-validate-php-after-setup-disabled third-party-advisory