User Impersonation Affecting yeswiki/yeswiki package, versions <4.6.7
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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Test your applications- Snyk IDSNYK-PHP-YESWIKIYESWIKI-21709031
- published25 Oct 2026
- disclosed2 Oct 2026
- creditUnknown
Introduced: 2 Oct 2026
NewCVE-2026-104445 (opens in a new tab)How to fix?
Upgrade yeswiki/yeswiki to version 4.6.7 or higher.
Overview
Affected versions of this package are vulnerable to User Impersonation via the ActivityPub inbox process. An attacker can delete or overwrite other actors' federated entries by sending signed Delete or Update activities referencing a mirrored entry's sourceUrl using any ActivityPub keypair.