CVE-2026-34964
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.
- Affected products
- Adminer
- CVSS 4.0
- 6.9 MEDIUM
- CVSS 3.1
- 5.8 MEDIUM
- EPSS
- 0.3% (23th percentile)
- Weakness
- CWE-918
- NVD status
- Received
- Published
- 2026-08-25
CVE-2026-34964 at NVD
No indexed exploits for CVE-2026-34964 yet
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No exploit for CVE-2026-34964 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.