CVE-2021-21311

Published Feb 11, 2021

Last updated 4 months ago

Overview

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.
Source
security-advisories@github.com
NVD status
Analyzed
Products
adminer, debian_linux

Risk scores

CVSS 3.1

Type
Primary
Base score
7.2
Impact score
2.7
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
6.4
Impact score
4.9
Exploitability score
10
Vector string
AV:N/AC:L/Au:N/C:P/I:P/A:N

Known exploits

Data from CISA

Vulnerability name
Adminer Server-Side Request Forgery Vulnerability
Exploit added on
Sep 29, 2025
Exploit action due
Oct 20, 2025
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

security-advisories@github.com
CWE-918

Social media

Hype score
Not currently trending

Configurations