CVE-2026-116822 YesWiki before 4.7.0 Template Traversal via BazarListeAction template Parameter

Medium 6.9 Published 26 Oct 2026 Updated 27 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-116822?

CVE-2026-116822 is a medium-severity vulnerability in yeswiki, published on 26 Oct 2026.

Official description

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.

Weakness: CWE-73

Which versions are affected by CVE-2026-116822?

How do I fix CVE-2026-116822?

No fix has been published for CVE-2026-116822 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116822 being exploited?

There is no known exploitation of CVE-2026-116822 in the wild and no public exploit code.

Sources

Also known as GHSA-56wp-34hq-q74f, GHSA-qfv2-x8g4-qg27.