CVE-2021-21311

7.2 HIGH CISA KEV - Actively Exploited
Published: February 11, 2021 Modified: October 24, 2025
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351
Source: security-advisories@github.com
Patch
https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
Source: security-advisories@github.com
Exploit Third Party Advisory
https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6
Source: security-advisories@github.com
Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html
Source: security-advisories@github.com
Mailing List Third Party Advisory
https://packagist.org/packages/vrana/adminer
Source: security-advisories@github.com
Product Third Party Advisory
https://github.com/vrana/adminer/commit/ccd2374b0b12bd547417bf0dacdf153826c83351
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory
https://github.com/vrana/adminer/security/advisories/GHSA-x5r2-hj5c-8jx6
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00002.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
https://packagist.org/packages/vrana/adminer
Source: af854a3a-2127-422b-91ae-364da2661108
Product Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21311
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

11 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.2 / 10.0
EPSS (Exploit Probability)
93.9%
100th percentile
Exploitation Status
Actively Exploited
Remediation due: 2025-10-20

Weaknesses (CWE)

CWE-918

Affected Vendors

adminer debian

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