---
title: "CVE-2026-86064: Klever-Go - Broken Access Control"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-86064/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-86064)

## 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](https://cwe.mitre.org/data/definitions/200.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-86064](https://nvd.nist.gov/vuln/detail/CVE-2026-86064)
- [https://github.com/klever-io/klever-go/commit/a2740c985a788fb69e17742ea4f0c37c440733b2](https://github.com/klever-io/klever-go/commit/a2740c985a788fb69e17742ea4f0c37c440733b2)
- [https://github.com/klever-io/klever-go/pull/74](https://github.com/klever-io/klever-go/pull/74)
- [https://github.com/klever-io/klever-go/releases/tag/v1.7.20](https://github.com/klever-io/klever-go/releases/tag/v1.7.20)
- [https://github.com/klever-io/klever-go/security/advisories/GHSA-9v8p-frvj-2pcm](https://github.com/klever-io/klever-go/security/advisories/GHSA-9v8p-frvj-2pcm)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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