CVE-2026-29971 Cross-site scripting in n/a
Reflected XSS in WebFileSys allows arbitrary JavaScript execution via various input vectors, potentially leading to session hijacking or 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-2026-29971?
CVE-2026-29971 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 Apr 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
A reflected cross-site scripting (XSS) vulnerability exists in WebFileSys version before 2.32.0 and fixed in v.2.32.0. User-controlled input is reflected into HTML and JavaScript contexts without proper output encoding, allowing arbitrary JavaScript execution in the victim's browser via the ftpBackup functionality, authentication input handling, search functionality, and error message rendering components
Weakness: CWE-79
Which versions are affected by CVE-2026-29971?
How do I fix CVE-2026-29971?
No fix has been published for CVE-2026-29971 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-2026-29971 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29971 exists.
Public exploit code: 2 proofs of concept on GitHub.
Sources
Also known as GHSA-2r97-2299-vq73.