CVE-2021-26040

Name: CVE-2021-26040
Creator: NVD / NIST
Published: 2021-08-24T15:15:06.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2021-26040 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS Probability

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Joomla	Joomla\!	4.0.0

References

Timeline

Published: Aug 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26040?

An issue was discovered in Joomla! 4.0.0. The media manager does not correctly check the user's permissions before executing a file deletion command.

How severe is CVE-2021-26040?

CVE-2021-26040 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26040?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST