CVE-2026-108802 y_project RuoYi Dictionary Data Drawer Preview add renderDrawer cross site scripting
Remote attackers can execute arbitrary scripts via the cssClass argument in the Dictionary Data Drawer Preview, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-108802?
CVE-2026-108802 is a medium-severity cross-site scripting vulnerability in y_project RuoYi, published on 12 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A weakness has been identified in y_project RuoYi up to 4.8.3. This affects the function renderDrawer of the file /system/dict/data/add of the component Dictionary Data Drawer Preview. Executing a manipulation of the argument cssClass can lead to cross site scripting. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-108802?
How do I fix CVE-2026-108802?
No fix has been published for CVE-2026-108802 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-2026-108802 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108802 exists.
Sources
Also known as GHSA-pq38-jcrf-2whw.