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.

CVSS v4.0

6.9 MEDIUMCVSS: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:X/V:X/RE:X/U:X

CVSS v3.1

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.34% chance of exploitation in the next 30 days, 27th percentile

Published

2026-07-24

Updated

2026-07-28

Proof-of-concept exploits (1)

• treeverse/lakeFS/issues/10465

References

• CVE Record
• NVD entry

Related

• CVE-2026-66005
• CVE-2026-66007
• CVE-2026-66004
• CVE-2026-6601
• CVE-2026-6600
• CVE-2026-66012