Auth bypass in 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 setup completion. Attackers can POST to this endpoint to modify security update preferences, disable security communications, and trigger falsified telemetry events using the legitimate installation ID.
Vulnerability class: Broken Authentication
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:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002
Affected products
- Lakefs
- Treeverse Lakefs — versions 0, 71a45eeb1639d146d34b8effd7e86d077160ed7c
Weakness classification (CWE)
References
- github.com/treeverse/lakeFS/commit/71a45eeb1639d146d34b8effd7e86d077160ed7c (Patch, patch)
- github.com/treeverse/lakeFS/issues/10465 (issue-tracking, Exploit, technical-description, exploit, Issue Tracking)
- github.com/treeverse/lakeFS/pull/10499 (issue-tracking, Patch, patch, Issue Tracking)
- www.vulncheck.com/advisories/lakefs-unauthenticated-operator-metadata-overwrite… (Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-66006?
- CVE-2026-66006 is a medium-severity vulnerability in 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.