CVE-2026-11569 Quay: quay: stored xss via filedrop svg upload
An authenticated user can upload malicious SVG files to trigger stored cross-site scripting, potentially compromising other users' 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-2026-11569?
CVE-2026-11569 is a medium-severity cross-site scripting vulnerability in Red Hat Quay 3, published on 8 Jun 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 flaw was found in Quay. The filedrop endpoint accepts any mime type without validation, allowing an authenticated user with repository write access to upload a malicious SVG file containing JavaScript. The file is stored and served inline through the CDN, enabling stored cross-site scripting when a victim visits the archive URL.
Weakness: CWE-79
Which versions are affected by CVE-2026-11569?
How do I fix CVE-2026-11569?
No fix has been published for CVE-2026-11569 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-2026-11569 being exploited?
There is no known exploitation of CVE-2026-11569 in the wild and no public exploit code.
Sources
Also known as GHSA-vv84-74f6-h4pq.