What is CVE-2026-66006?

CVE-2026-66006 is a medium-severity vulnerability in Treeverse Lakefs, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-07-24.

How severe is CVE-2026-66006?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Treeverse Lakefs

CVE-2026-66006

lakeFS through 1.83.0, fixed in commit 71a45ee, contains an authentication bypass vulnerability in the /setup_comm_prefs endpoint that allows unauthenticated attackers to overwrite operator metadata including email, name, and company after…

Vulnerability class: Broken Authentication

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:N/I:L/A:N.

Affected products

Treeverse Lakefs — versions 0, 71a45eeb1639d146d34b8effd7e86d077160ed7c

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (technical-description, exploit)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-66006?: CVE-2026-66006 is a medium-severity vulnerability in Treeverse Lakefs, classified under Missing Authentication for Critical Function. CVSS score: 5.3/10. Published 2026-07-24.
How severe is CVE-2026-66006?: Medium severity. CVSS v3 base score is 5.3 out of 10.