CVE-2026-105224 YesWiki before 4.6.7 Stored XSS via Bazar valeur Action
Attackers can execute arbitrary scripts in viewers' browsers via stored XSS in the Bazar valeur action of YesWiki.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-105224?
CVE-2026-105224 is a medium-severity cross-site scripting vulnerability in yeswiki, published on 4 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
YesWiki before 4.6.7 contains a cross-site scripting vulnerability in the Bazar valeur action that allows page editors to inject script by rendering unescaped HTML fetched from a remote URL. Attackers can point tools/bazar/actions/valeur.php at a controlled server returning BAZ_fiche_titre markup with an img onerror handler, executing script in every viewer's browser.
Weakness: CWE-79
Which versions are affected by CVE-2026-105224?
How do I fix CVE-2026-105224?
No fix has been published for CVE-2026-105224 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-105224 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-105224 exists.
Sources
Also known as GHSA-4jc3-v5mf-cppg.