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Back to active CVEs
Medium · CVSS 5.8CVE-2026-34964

Adminer before 5.5.0 SSRF via PDO DSN InjectionCVE-2026-34964

Answer in brief

CVE-2026-34964 records a Medium severity (CVSS 5.8) vulnerability in Adminer before 5.5.0 SSRF via PDO DSN Injection. The current sources do not mark it as known exploited. The current feed maps vrana/adminer (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 25, 2026Updated Sep 8, 2026Source checked Oct 9, 2026First seen by HOL Aug 25, 2026Material review Sep 8, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps vrana/adminer (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
vrana/adminergeneric>=0 <5.5.05.5.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for vrana/adminer.
  2. 2Review the reported fix. Update vrana/adminer to 5.5.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 8, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 25, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Grid Protection Alliance openPDC and openHistorian Server-Side Request Forgery (SSRF)Also CWE-918
  • Grid Protection Alliance openPDC and openHistorian Deserialization of Untrusted DataSame generic ecosystem
  • Reachable assertion in illumos bhyve REP string instruction emulation allows guest to panic hostSame generic ecosystem
  • KodExplorer < 4.55 Path Traversal via unzip_pre_name() ZIP ExtractionSame generic ecosystem
  • Missing release of passed file descriptors in illumos nscd allows local users to exhaust kernel memorySame generic ecosystem
  • Double free in OmniOS and SmartOS ipmgmtd allows local users to crash the daemonSame generic ecosystem

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Oct 9, 2026
References
2 linked sources
Open source record