CVE-2026-102811 Marmite through 0.4.2 Unauthenticated API Access via Development Server
Unauthenticated attackers can modify site content and configuration, and write files outside the project directory via path traversal in the development server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-102811?
CVE-2026-102811 is a high-severity missing authorization vulnerability in rochacbruno marmite, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Marmite through 0.4.2 contains missing authentication in the development server endpoints /__marmite__/content, /__marmite__/config, and /__marmite__/file/, allowing unauthenticated attackers to create, modify, and overwrite site content and configuration. Attackers can exploit unsanitized path parameters in handle_create_content and handle_clone_content to write files outside the project directory via directory traversal.
Weakness: CWE-306
Which versions are affected by CVE-2026-102811?
How do I fix CVE-2026-102811?
No fix has been published for CVE-2026-102811 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-102811 being exploited?
There is no known exploitation of CVE-2026-102811 in the wild and no public exploit code.
Sources
Also known as GHSA-j4pw-7rqh-x2mj.