phpMyAdmin through 5.2.3 contains a server-side request forgery vulnerability that allows unauthenticated attackers to trigger outbound…
CVE-2026-119428
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.
Assessment
- CVSS
- 6.3 (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-918
- Assigner
- disclosure@vulncheck.com
CVSS vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/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-setup-validate
- https://github.com/phpmyadmin/phpmyadmin
- https://github.com/phpmyadmin/phpmyadmin/blob/RELEASE_5_2_3/libraries/classes/Config/Validator.php#L241
- https://github.com/phpmyadmin/phpmyadmin/blob/RELEASE_5_2_3/setup/validate.php#L21-L35
- https://github.com/phpmyadmin/phpmyadmin/commit/126ac3ac5662ed3171ef3646636348fad3f8e952
- https://github.com/phpmyadmin/phpmyadmin/commit/510e442593af5d4702bbb46cdb45ad51f3a8a9d3
- https://github.com/phpmyadmin/phpmyadmin/pull/19156
- https://www.vulncheck.com/advisories/phpmyadmin-through-5.2.3-ssrf-via-setup-validate-php-after-setup-disabled
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