Arbitrary Code Injection 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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- published27 Jun 2026
- disclosed8 Jun 2026
- creditN0tFix3d
Introduced: 8 Jun 2026
CVE-2026-52778 (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 Arbitrary Code Injection via the CalcField.php process. An attacker can execute arbitrary PHP code or cause a server crash by submitting specially crafted input that bypasses sanitization and is processed by the eval function.