Auth bypass in Rochacbruno Marmite
CVE-2026-102811
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.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/rochacbruno/marmite/issues/554 (issue-tracking)
- github.com/rochacbruno/marmite/blob/4b2ddbd7595233b2e1d0086e18490fec49705098/sr… (technical-description)
- github.com/rochacbruno/marmite/blob/4b2ddbd7595233b2e1d0086e18490fec49705098/sr… (technical-description)
- github.com/rochacbruno/marmite/blob/4b2ddbd7595233b2e1d0086e18490fec49705098/sr… (technical-description)
- github.com/rochacbruno/marmite/commit/303a0bf2fff4302f4164c0c39932fdffc6683ad4 (patch, mitigation)
- github.com/rochacbruno/marmite (product)
- www.vulncheck.com/advisories/marmite-through-0.4.2-unauthenticated-api-access-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-102811?
- CVE-2026-102811 is a high-severity vulnerability in Rochacbruno Marmite, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-09-29.
- How severe is CVE-2026-102811?
- High severity. CVSS v3 base score is 7.5 out of 10.