CVE-2026-116822

YesWiki before 4.7.0 contains a path traversal vulnerability in BazarListeAction that allows unauthenticated attackers to select arbitrary templates within the @bazar Twig namespace via the template GET parameter. Attackers can append crafted template values to pages containing the bazarliste action to force unintended layouts, causing page defacement for visitors following the crafted link.

Score

CVSS 4.0 6.9 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-26

Last modified

2026-10-27

Weaknesses

CWE-73

Affected products

• Yeswiki (Yeswiki)

References

• https://github.com/YesWiki/yeswiki/security/advisories/GHSA-qfv2-x8g4-qg27
• https://www.vulncheck.com/advisories/yeswiki-before-4.7.0-template-traversal-via-bazarlisteaction-template-parameter