CVE-2026-41932 Vvveb < 1.0.8.3 Stored XSS via Signup Controller
Attackers can inject malicious scripts via the signup username field, leading to stored XSS execution when the display name is rendered.
- 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-2026-41932?
CVE-2026-41932 is a medium-severity cross-site scripting vulnerability in givanz Vvveb, published on 14 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 1.0.8.3 contains a stored cross-site scripting vulnerability in the customer signup flow where the Signup::addUser() controller copies raw POST username values into the display_name field before sanitization occurs. Attackers can submit HTML and script markup in the username field during signup, which gets stripped from the username column but persisted verbatim in the display_name column, allowing stored XSS execution when display_name is rendered without encoding in vulnerable views.
Weakness: CWE-79
Which versions are affected by CVE-2026-41932?
How do I fix CVE-2026-41932?
No fix has been published for CVE-2026-41932 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-2026-41932 being exploited?
There is no known exploitation of CVE-2026-41932 in the wild and no public exploit code.
Sources
Also known as GHSA-prv3-g5c7-jrxh.