CVE-2026-63361 LimeSurvey Community Edition 7.0.5 - Reflected XSS in HTML editor popup
Authenticated attackers can execute arbitrary scripts via reflected XSS in the HTML editor popup, potentially compromising user sessions.
- 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-2026-63361?
CVE-2026-63361 is a high-severity cross-site scripting vulnerability in LimeSurvey, published on 14 Aug 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
LimeSurvey Community Edition 7.0.5 contains an authenticated reflected cross-site scripting vulnerability in the HTML editor popup endpoint. The text and name query parameters are passed through a blacklist sanitizer and then rendered without context-appropriate output encoding.
Weakness: CWE-79
Which versions are affected by CVE-2026-63361?
How do I fix CVE-2026-63361?
No fix has been published for CVE-2026-63361 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-2026-63361 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-63361 exists.
Sources
Also known as GHSA-r82m-pqrh-phxp.