All vulnerabilities
CVE-2021-21311GHSA-x5r2-hj5c-8jx6

Adminer Server-Side Request Forgery Vulnerability

Adminer AdminerPackagistApplications & CMS
Open in ThreatlineRecord JSON
CVSS
7.2High
ExploitationExploited in the wildAdded to KEV 29 Sep 2025CISA KEV
Exploit odds (EPSS)98.5%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.7.9Fixed versionOSV
Federal deadline20 Oct 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

  • 4.7.9vrana/adminer, PackagistOSVcomposer require "vrana/adminer:^4.7.9"

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 11 Feb 2021, 20:55 UTCPublishedCVE List
  2. 29 Sep 2025Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateAdminer <4.7.9 - Server-Side Request ForgeryNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.

Text from CVE List

Affected versions 25

  • admineraffected: >= 4.0.0, < 4.7.9CVE List
  • vrana/adminer, Packagistfrom first release, fixed in 4.7.9OSV
  • vrana/adminer, Packagistv4.2.0OSV
  • vrana/adminer, Packagistv4.2.1OSV
  • vrana/adminer, Packagistv4.2.2OSV
  • vrana/adminer, Packagistv4.2.3OSV
  • vrana/adminer, Packagistv4.2.4OSV
  • vrana/adminer, Packagistv4.2.5OSV
  • vrana/adminer, Packagistv4.3.0OSV
  • vrana/adminer, Packagistv4.3.1OSV
  • vrana/adminer, Packagistv4.4.0OSV
  • vrana/adminer, Packagistv4.5.0OSV
  • vrana/adminer, Packagistv4.6.0OSV
  • vrana/adminer, Packagistv4.6.1OSV
  • vrana/adminer, Packagistv4.6.2OSV
  • vrana/adminer, Packagistv4.6.3OSV
  • vrana/adminer, Packagistv4.7.0OSV
  • vrana/adminer, Packagistv4.7.1OSV
  • vrana/adminer, Packagistv4.7.2OSV
  • vrana/adminer, Packagistv4.7.3OSV
  • vrana/adminer, Packagistv4.7.4OSV
  • vrana/adminer, Packagistv4.7.5OSV
  • vrana/adminer, Packagistv4.7.6OSV
  • vrana/adminer, Packagistv4.7.7OSV
  • vrana/adminer, Packagistv4.7.8OSV

References 7