Unrestricted Uploads in Concrete5

HIGH 7.2CVE-2020-11476 · GHSA-hf9p-9r39-r2h3 · Published 28/07/2020 · updated 17/06/2026

In short

CVE-2020-11476 is a HIGH (CVSS 7.2) vulnerability affecting concrete5/concrete5, concrete cms (concretecms).
Chance of exploitation in the next 30 days (EPSS): 2.9%, higher than 87.1% of all vulnerabilities.
Fix: update to 8.5.3 or later.

Package	Affected versions	Patched versions
concrete5/concrete5 Packagist	`< 8.5.3`	`8.5.3`
concrete cms concretecms	`< 8.5.3`	`8.5.3`

Concrete5 before 8.5.3 allows Unrestricted Upload of File with Dangerous Type such as a .phar file.

NVD description

Concrete5 before 8.5.3 allows Unrestricted Upload of File with Dangerous Type such as a .phar file.

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

Package

Affected versions

Patched versions

Packagist

< 8.5.3

8.5.3

< 8.5.3

8.5.3

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