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Vulnerability record · CVE-2026-66006 · published 24 July 2026

CVE-2026-66006: Lakefs missing authentication for critical function vulnerability

Lakefs · Lakefs

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.

6.9 CVSS 4.0 Medium EPSS 0.56% · top 56.0% CWE-306 · Missing authentication for critical function
6.9CVSS 4.0 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
30 Jul 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/treeverse/lakeFS/commit/71a45eeb1639d146d34b8effd7e86d077160ed7c Patch
https://github.com/treeverse/lakeFS/issues/10465 ExploitIssue Tracking
https://github.com/treeverse/lakeFS/pull/10499 Issue TrackingPatch
https://www.vulncheck.com/advisories/lakefs-unauthenticated-operator-metadata-overwrite-via-setup-comm-prefs PatchThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-66006), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.