CVE-2026-93505 SveltyCMS SVG Media Upload media-service.server.ts cross site scripting
Remote attackers can execute arbitrary scripts via malicious SVG uploads in SveltyCMS, requiring a patch to mitigate the cross-site scripting risk.
- 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-2026-93505?
CVE-2026-93505 is a medium-severity cross-site scripting vulnerability in SveltyCMS, published on 18 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
A vulnerability was found in SveltyCMS 0.0.6. This vulnerability affects unknown code of the file src/utils/media/media-service.server.ts of the component SVG Media Upload. Performing a manipulation results in cross site scripting. The attack can be initiated remotely. The patch is named 05b4f9efeb79e9d72a693232334d7529687f896f. Applying a patch is the recommended action to fix this issue.
Which versions are affected by CVE-2026-93505?
How do I fix CVE-2026-93505?
No fix has been published for CVE-2026-93505 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-2026-93505 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93505 exists.
Sources
Also known as GHSA-mjpq-j95w-2f3f.