CVE-2025-8521 givanz Vvveb Add Type post-types cross site scripting
Remote attackers can inject malicious scripts via the Add Type handler in Vvveb, potentially leading to code execution or account takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-8521?
CVE-2025-8521 is a medium-severity cross-site scripting vulnerability in givanz Vvveb, published on 4 Aug 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A vulnerability, which was classified as problematic, has been found in givanz Vvveb up to 1.0.5. This issue affects some unknown processing of the file /vadmin123/index.php?module=settings/post-types of the component Add Type Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.0.6 is able to address this issue. The patch is named b53c7161da606f512b7efcb392d6ffc708688d49/605a70f8729e4d44ebe272671cb1e43e3d6ae014. It is recommended to upgrade the affected component.
Which versions are affected by CVE-2025-8521?
It affects 1 product.
Products include Vvveb Vvveb.
How do I fix CVE-2025-8521?
No fix has been published for CVE-2025-8521 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-2025-8521 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8521 exists.
Other vulnerabilities in givanz Vvveb
Sources
Also known as GHSA-6vjh-hc78-5v2f.