CVE-2021-26036

HIGH 7.5CVE-2021-26036 · Published 07/07/2021 · updated 17/06/2026

In short

CVE-2021-26036 is a HIGH (CVSS 7.5) vulnerability affecting joomla! (joomla).
Chance of exploitation in the next 30 days (EPSS): 1.2%, higher than 68.8% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
joomla! joomla	`≥ 2.5.0, ≤ 3.9.27`	No fix yet

An issue was discovered in Joomla! 2.5.0 through 3.9.27. Missing validation of input could lead to a broken usergroups table.

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

≥ 2.5.0, ≤ 3.9.27

No fix yet

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