High severityNVD Advisory· Published Sep 5, 2026· Updated Sep 8, 2026
CVE-2026-52762
CVE-2026-52762
Description
YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki Bazar contains a stored Server-Side Template Injection (SSTI) vulnerability in the semantic template feature that can be escalated to confirmed Remote Code Execution (RCE). An authenticated administrator can place arbitrary Twig expressions into the Semantic template (Twig) field (bn_sem_template), and that content is later executed server-side when public semantic endpoints are requested. This issue has been patched in version 4.6.6.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
yeswiki/yeswikiPackagist | < 4.6.6 | 4.6.6 |
Affected products
1Patches
Vulnerability mechanics
References
4News mentions
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