Description
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.
Published: 2026-08-25
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 25 Aug 2026 04:15:00 +0000

Type Values Removed Values Added
First Time appeared Vrana
Vrana adminer
Vendors & Products Vrana
Vrana adminer

Tue, 25 Aug 2026 02:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Adminer before 5.5.0 SSRF via PDO DSN Injection
First Time appeared Adminer
Adminer adminer
Weaknesses CWE-918
CPEs cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:*
Vendors & Products Adminer
Adminer adminer
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-25T01:29:58.396Z

Reserved: 2026-03-31T17:58:43.754Z

Link: CVE-2026-34964

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-25T02:16:40.553

Modified: 2026-08-25T02:16:40.553

Link: CVE-2026-34964

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-25T04:00:08Z

Weaknesses
  • CWE-918

    Server-Side Request Forgery (SSRF)