Server-Side Request Forgery (SSRF) Affecting adminer package, versions <6.0.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.31% (23rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-ADMINER-19270576
  • published27 Aug 2026
  • disclosed25 Aug 2026

Introduced: 25 Aug 2026

NewCVE-2026-34964  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Debian:unstable adminer to version 6.0.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream adminer package and not the adminer package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Adminer 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.

CVSS Base Scores

version 3.1