CVE-2021-22950

MEDIUM 6.5CVE-2021-22950 · Published 23/09/2021 · updated 17/06/2026

In short

CVE-2021-22950 is a MEDIUM (CVSS 6.5) vulnerability affecting concrete cms (concretecms).
Chance of exploitation in the next 30 days (EPSS): 0.44%, higher than 38.3% of all vulnerabilities.
Fix: update to 8.5.6 or later.

Package	Affected versions	Patched versions
concrete cms concretecms	`< 8.5.6`	`8.5.6`

Description

Concrete CMS prior to 8.5.6 had a CSFR vulnerability allowing attachments to comments in the conversation section to be deleted.Credit for discovery: "Solar Security Research Team"

References

documentation.concretecms.org/developers/introduction/version-history/856-release-notes · Release Notes
hackerone.com/reports/1102177 · Permissions Required

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Package

Affected versions

Patched versions

concrete cms

concretecms

< 8.5.6

8.5.6

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