Auth bypass in Lollms
CVE-2026-0558
A vulnerability in parisneo/lollms, up to and including version 2.2.0, allows unauthenticated users to upload and process files through the `/api/files/extract-text` endpoint. This endpoint does not enforce authentication, unlike other file-related endpoints, and lacks the `Depends(get_current_active_user)` dependency. This issue can lead to denial of service (DoS) through resource exhaustion, information disclosure, and violation of the application's documented security policies.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.020 · change: +0.001
Affected products
- Lollms
- Parisneo Parisneo/lollms — versions unspecified
Weakness classification (CWE)
References
- huntr.com/bounties/0a722001-89ce-4c91-b6a6-a55ee5ba2113 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/parisneo/lollms/commit/a6625dc83786ff21d109b0d545ca61b770607ef3 (Patch)
Frequently asked questions
- What is CVE-2026-0558?
- CVE-2026-0558 is a critical-severity vulnerability in Lollms, classified under Improper Authentication. CVSS score: 9.8/10. Published 2026-03-29.
- How severe is CVE-2026-0558?
- Critical severity. CVSS v3 base score is 9.8 out of 10.