Missing Authorization Affecting yeswiki/yeswiki package, versions <4.6.6
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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- published9 Jul 2026
- disclosed9 Jul 2026
- creditUnknown
Introduced: 9 Jul 2026
CVE-2026-52766 (opens in a new tab)How to fix?
Upgrade yeswiki/yeswiki to version 4.6.6 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization in the {{erasespamedcomments}} process. An attacker can permanently delete arbitrary wiki pages, including critical or administrative pages, by sending crafted POST requests containing a suppr[] array with targeted page tags, as there is no authorization or access control check performed before deletion. This is only exploitable if the default access control configuration is unchanged, allowing write access to all users.