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Vulnerabilities

Vulnerability · CVE-2026-25892

Adminer is open-source database management software.

Published Feb 9, 2026 · catalog updated Feb 10, 2026 · Adminer is open-source database

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-25892. EPSS is 1.69%. Act only if a listed version of Adminer is open-source database is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Adminer is open-source database).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.69%
Remediation
Version ranges on file
Affected products
vendor vrana adminer 4.6.2, < 5.4.2

Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor vrana adminer 4.6.2, < 5.4.24.6.2, < 5.4.2

How to fix CVE-2026-25892

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-25892. EPSS is 1.69%. Act only if a listed version of Adminer is open-source database is installed.

Which versions are affected?

Compare what you have installed with vrana adminer 4.6.2, < 5.4.2 4.6.2, < 5.4.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.69%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 9, 2026 · EUVD

    Detected

    Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load,

  2. Feb 10, 2026 · EUVD

    Updated

    Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load,

Sources

  • CVE.orgVulnerability recordCVE-2026-25892

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-25892

    30-day exploitation probability 1.69%

    first.org
  • EUVDVulnerability recordEUVD-2026-6870

    Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 4, 2026
  • EUVDNov 3, 2026