CVE-2026-116823 YesWiki before 4.7.0 Reflected XSS via BazarField $_REQUEST Fallback

Medium 5.3 Published 26 Oct 2026 Updated 26 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-116823?

CVE-2026-116823 is a medium-severity vulnerability in yeswiki, published on 26 Oct 2026.

Official description

YesWiki before 4.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject JavaScript by supplying query parameters matching missing Bazar field names. Attackers can craft links where BazarField::getValue() falls back to unsanitized $_REQUEST values rendered via Twig |raw templates, performing same-origin authenticated actions in victims' sessions.

Weakness: CWE-79

Which versions are affected by CVE-2026-116823?

How do I fix CVE-2026-116823?

No fix has been published for CVE-2026-116823 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116823 being exploited?

There is no known exploitation of CVE-2026-116823 in the wild and no public exploit code.

Sources

Also known as GHSA-5rxq-hc4r-x8r8, GHSA-hcvp-q8fx-84mc.