Auth bypass in Libretranslate
CVE-2026-92803
LibreTranslate through 1.9.6 omits the access_check decorator from the download_file route, allowing unauthenticated access to translated files. Attackers can bypass API key requirements and abuse ban lists to download files without authentication on protected instances.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (44.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/LibreTranslate/LibreTranslate/issues/1012 (issue-tracking)
- github.com/LibreTranslate/LibreTranslate (product)
- github.com/LibreTranslate/LibreTranslate/blob/v1.9.6/libretranslate/app.py (technical-description)
- www.vulncheck.com/advisories/libretranslate-through-1.9.6-missing-access-check-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92803?
- CVE-2026-92803 is a medium-severity vulnerability in Libretranslate, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-09-16.
- How severe is CVE-2026-92803?
- Medium severity. CVSS v3 base score is 5.3 out of 10.