Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/YesWiki/yeswiki/commit/89462f1577a8a1fe7fcff75e77b5058a74d804
- https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-65p8-9433-jpcp
- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-65p8-9433-jpcp
FAQ
What is CVE-2026-52762?
CVE-2026-52762 is a documented vulnerability. 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 escala...
How severe is CVE-2026-52762?
CVSS scoring is not yet available for CVE-2026-52762. Check NVD for updates.
Is there a patch for CVE-2026-52762?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.