CVE-2026-53555 Stored XSS via SVG Upload
An authenticated user can upload a malicious SVG file that executes JavaScript in other users' browsers, leading to session hijacking or data theft.
- 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-2026-53555?
CVE-2026-53555 is a medium-severity cross-site scripting vulnerability in dataease SQLBot, published on 17 Sep 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
SQLBot is an intelligent Text-to-SQL system based on large language models and RAG. Prior to 1.9.0, an authenticated uploader can submit an image/svg+xml assistant UI logo through PATCH /api/v1/system/assistant/ui, and SQLBot stores the SVG without sanitizing or validating embedded active content. SQLBot later serves the file inline from the same application origin through GET /api/v1/system/assistant/picture/{filename}. When another user loads that generated resource, JavaScript embedded in the SVG executes in the SQLBot web application context, resulting in stored cross-site scripting with access to data and actions available to the victim's session. This issue is fixed in version 1.9.0.
Weakness: CWE-79
Which versions are affected by CVE-2026-53555?
How do I fix CVE-2026-53555?
No fix has been published for CVE-2026-53555 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-2026-53555 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53555 exists.
Sources
Also known as GHSA-v23m-5pvq-xcgx.