CVE-2026-82838 Default webserver configuration with incorrect CSP
Attackers can execute JavaScript via uploaded SVG files due to missing Content Security Policy in the default Docker image.
- 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-2026-82838?
CVE-2026-82838 is a medium-severity cross-site scripting vulnerability in pretix venueless, published on 31 Aug 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
The default docker image shipped for Venueless did not properly ensure that uploaded SVG files could not be delivered with executable JavaScript content. A valid Content Security Policy is now set.
Weakness: CWE-80
Which versions are affected by CVE-2026-82838?
How do I fix CVE-2026-82838?
No fix has been published for CVE-2026-82838 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-2026-82838 being exploited?
There is no known exploitation of CVE-2026-82838 in the wild and no public exploit code.
Sources
Also known as GHSA-38wh-hqvm-xgfc.