CVE-2026-52778
CVE-2026-52778 · YesWiki has Unsafe eval() in Formula Calculator - Remote Code Execution (RCE) & Denial of Service (DoS)
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YesWiki is a wiki system written in PHP. Prior to version 4.6.6, an unsafe execution vulnerability exists in the Bazar form field calculator (CalcField.php) of YesWiki. The application attempts to sanitize user-defined mathematical formulas using a complex recursive regular expression before passing them to the PHP eval() function. This implementation is inherently flawed: it is vulnerable to Regular Expression Denial of Service (ReDoS / Stack Overflow) which can crash the server, and it creates a high-risk architecture where any logic bypass directly results in arbitrary PHP code execution. Version 4.6.6 patches the issue.
CVSS 9.8 · Critique · EPSS 0,8% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: php
Produits et versions concernés
yeswiki
- Versions du logiciel
- < 4.6.6: Concernée
Aucun correctif publié
yeswiki/yeswiki Packagist
- Versions du logiciel
- 4.2.3
- v4.1.0
- v4.1.1
- v4.1.2
- v4.1.3
- v4.1.4
- v4.1.5
- v4.2.0
- v4.2.1
- v4.2.2
- v4.2.4
- v4.3
- v4.3.1
- v4.4.0
- v4.4.1
- v4.4.2
- v4.4.3
- v4.4.4
- v4.4.5
- v4.5.0
- v4.5.1
- v4.5.2
- v4.5.3
- v4.5.4
- v4.5.5
- v4.6.0
- v4.6.1
- v4.6.2
- v4.6.3
- v4.6.4
- v4.6.5
- Plages de versions concernées
- ECOSYSTEM: < 4.6.6
Mettez à jour vers 4.6.6