CVE-2026-34964

NameCVE-2026-34964
DescriptionAdminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator, which only inspects leading integers for privileged ports and fails to reject non-numeric port values. Attackers can inject PDO DSN keys like host= and port= into the server parameter to bypass the privileged-port restriction and establish TCP connections to arbitrary internal hosts and ports before authentication.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
adminer (PTS)bullseye4.7.9-2vulnerable
bookworm4.8.1-1vulnerable
trixie5.2.1+dfsg-1vulnerable
forky, sid6.0.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
adminersource(unstable)6.0.0-1

Notes

https://github.com/vrana/adminer/security/advisories/GHSA-58cq-mgw2-38m5

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