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

Medium 6.9 Published 24 Jul 2026 Updated 28 Jul 2026

Unauthenticated attackers can overwrite operator metadata and disable security communications in lakeFS via the setup_comm_prefs endpoint.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-66006?

CVE-2026-66006 is a medium-severity missing authorization vulnerability in treeverse lakeFS, published on 24 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

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.

Weakness: CWE-306

Which versions are affected by CVE-2026-66006?

It affects 1 product.

Products include Lakefs Lakefs.

How do I fix CVE-2026-66006?

No fix has been published for CVE-2026-66006 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-66006 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-66006 exists.

Sources

Also known as GHSA-87fc-9c43-8q4g.