Vulnerability · Published Jul 24, 2026 · Assigned by VulnCheck

CVE-2026-66006lakeFS Unauthenticated Operator Metadata Overwrite via setup_comm_prefs

Medium 5.3

In plain English

A medium-severity missing authentication in lakeFS from treeverse. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.6%top 53.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
treeverse	lakeFS	0 – through 1.83.0

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

Researcher Disclosure technical-description, exploit, issue-tracking
Pull Request issue-tracking, patch
Patch Commit patch
https://www.vulncheck.com/advisories/lakefs-unauthenticated-operator-metadata-overwrite-via-setup-comm-prefs third-party-advisory