CVE-2026-41929 Vvveb < 1.0.8.2 Unauthenticated Reflected XSS via Visual Editor
Unauthenticated attackers can execute arbitrary JavaScript via reflected XSS in the visual editor, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-41929?
CVE-2026-41929 is a medium-severity cross-site scripting vulnerability in givanz Vvveb, published on 7 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Vvveb before 1.0.8.2 contains an unauthenticated reflected cross-site scripting vulnerability in the visual editor preview renderer that allows attackers to execute arbitrary JavaScript by manipulating the r query parameter and _component_ajax POST parameter. Attackers can craft a malicious link or auto-submitted form that causes victims to execute attacker-controlled JavaScript in the context of the Vvveb origin, as the gating function isEditor() performs no session, role, or token verification and the view handler injects raw HTML POST body content without sanitization.
Weakness: CWE-79
Which versions are affected by CVE-2026-41929?
How do I fix CVE-2026-41929?
No fix has been published for CVE-2026-41929 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-2026-41929 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41929 exists.