Authentication Bypass Vulnerability in lakeFS by Treeverse
CVE-2026-66006

6.9MEDIUM

Key Information:

Vendor

Treeverse

Status
Lakefs
Vendor
CVE Published:
24 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-66006?

The lakeFS product by Treeverse contains an authentication bypass vulnerability located at the /setup_comm_prefs endpoint. This flaw allows unauthenticated attackers to overwrite critical operator metadata, including sensitive information like email, name, and company details, after the setup phase is complete. By leveraging this vulnerability, attackers can send POST requests to alter security update preferences, disable vital security communications, and even initiate deceptive telemetry events using the genuine installation ID. This presents significant risks to the integrity and security of the system, necessitating immediate attention and remediation.

Affected Version(s)

lakeFS 0 <= 1.83.0

lakeFS 71a45eeb1639d146d34b8effd7e86d077160ed7c

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-66006 - Proof of Concept

References

https://github.com/treeverse/lakeFS/issues/10465
technical-descriptionexploit
https://github.com/treeverse/lakeFS/pull/10499
issue-tracking
https://github.com/treeverse/lakeFS/commit/71a45eeb1639d1...
patch

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.