Improper Authorization Affecting craftcms/cms package, versions >=5.0.0-RC1, <5.9.21
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Jul 2026
- disclosed2 Jul 2026
- creditUnknown
Introduced: 2 Jul 2026
NewCVE-2026-50279 (opens in a new tab)How to fix?
Upgrade craftcms/cms to version 5.9.21 or higher.
Overview
craftcms/cms is a content management system.
Affected versions of this package are vulnerable to Improper Authorization in the entries/save-entry process. An attacker can reassign content authorship to another user without proper authorization by submitting crafted requests containing attacker-controlled authors or author parameters. This can result in falsified content ownership, corrupted audit trails, misleading notifications, broken approval workflows, and unauthorized reassignment of content responsibility. This is only exploitable if the attacker is authenticated, can edit the target entry, is among the existing authors or otherwise satisfies author change conditions, and has permission to view peer entries in the relevant section.