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.

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

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.

Affected products

Libretranslate

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (technical-description)
disclosure@vulncheck.com (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.