CVE-2021-21311KEV · OVERDUECWE-918

SSRF in adminer

High · published February 11, 2021

Patch now

Confirmed exploited, and the score agrees

CVSS calls it high at 7.2. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

369
days past CISA
deadline
CVSS v3.1
7.2
EPSS
98%
Percentile
99.9
In the wild
Confirmed
What it is

⚡ A sneaky server-side request forgery vulnerability is lurking in Adminer versions 4.0.0 to 4.7.9, ready to exploit your database connections! 🔥 Think of this as a sneaky delivery driver who accepts requests to drop off packages at any address, even if it's not intended for them — they could send sensitive data anywhere! An attacker could potentially access internal services and sensitive data within your network, all while appearing to be a legitimate Adminer request. This could lead to data leaks or even a full compromise of your database — absolutely devastating!

Put simply

Think of this as a sneaky delivery driver who accepts requests to drop off packages at any address, even if it's not intended for them — they could send sensitive data anywhere! This vulnerability allows attackers to send crafted requests through Adminer to unintended internal resources, leveraging the server’s trust in the application's requests. This can lead to unauthorized access to sensitive data.

What to do

An attacker could potentially access internal services and sensitive data within your network, all while appearing to be a legitimate Adminer request. This could lead to data leaks or even a full compromise of your database — absolutely devastating! Update Adminer immediately to version 4.7.9 or later to close this vulnerability. Be sure to review your configurations and ensure only necessary drivers are bundled to minimize risk. 🛡️ You've got this! With a quick patch, you'll secure your database in no time! 🚀

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.98464 · 99.9th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2021-02-11T20:55Z
KEV added
2025-09-29 · due 2025-10-20
EPSS history
Timeline
  • 29 SEP 00:00Z
    Added to CISA KEV — remediate by Oct 20
    kev
  • 11 FEB 20:55Z
    SSRF in adminer
    cvelistv5