Improper Enforcement of a Single, Unique Action Affecting getgrav/grav package, versions <2.0.0-beta.2
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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- published6 May 2026
- disclosed5 May 2026
- creditAnhNg1410
Introduced: 5 May 2026
NewCVE-2026-42609 (opens in a new tab)How to fix?
Upgrade getgrav/grav to version 2.0.0-beta.2 or higher.
Overview
getgrav/grav is a Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS.
Affected versions of this package are vulnerable to Improper Enforcement of a Single, Unique Action through the user creation process. An attacker can remove administrative privileges and disrupt access for legitimate administrators by submitting a new user with the same username as an existing high-privilege account, causing the original account's permissions to be overwritten with lower privileges.