Vulnerability DatabaseCVE-2021-21311
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CVE-2021-21311
Published:February 11, 2021
Updated:June 07, 2026
Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.
Affected Packages
vrana/adminer (PHP):
Affected version(s) >=dev-autoload <v4.7.9
Fix Suggestion:
Update to version v4.7.9
Related Resources (10)
https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
https://security-tracker.debian.org/tracker/CVE-2021-21311
https://github.com/vrana/adminer
https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6
https://nvd.nist.gov/vuln/detail/CVE-2021-21311
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311
https://sourceforge.net/p/adminer/news/2021/02/adminer-479-released
https://packagist.org/packages/vrana/adminer
https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351
https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
Exploit Maturity
ATTACKED
CVSS v3
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Exploit Maturity
HIGH
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)
CWE-918
EPSS
Base Score:
94.11