CVE-2026-86064 Klever-Go - Broken Access Control

Klever-Go < 1.7.20 contains a broken access control vulnerability caused by unauthenticated access to the default-open GET /log WebSocket route, letting remote attackers change global log levels and access operational logs, exploit requires no authentication.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.40% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-200

Vendor fix

Update to version 1.7.20 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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