---
id: CVE-2026-86544
title: >-
  knowns versions before 0.30.0 contain an authorization bypass vulnerability
  where mutating code actions are incorrectly classified as read-only operations
summary: >-
  knowns versions before 0.30.0 contain an authorization bypass vulnerability
  where mutating code actions are incorrectly classified as read-only
  operations. Attackers with read-restricted sessions can exploit code.replace
  to modify permis…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-863
vendor: knowns-dev
product: knowns
affected:
  - knowns < 0.30.0
published: '2026-09-07'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T15:17:18.617'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86544'
references:
  - url: >-
      https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/guard.go#L44-L60
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/permissions/registry.go#L99-L140
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/knowns-dev/knowns/commit/a2c98fc5c313463576c9348beeec6a74ddd7333b
    label: disclosure@vulncheck.com
  - url: 'https://github.com/knowns-dev/knowns/releases/tag/v0.30.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/knowns-dev/knowns/security/advisories/GHSA-w323-3wpx-f7g5
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/knowns-before-0.30.0-authorization-bypass-via-misclassified-code-actions
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-09T14:53:12.549589Z'
epss: 0.00585
epssPercentile: 0.45673
ingestedAt: '2026-09-08T15:33:26.981Z'
---

## Overview

knowns versions before 0.30.0 contain an authorization bypass vulnerability where mutating code actions are incorrectly classified as read-only operations. Attackers with read-restricted sessions can exploit code.replace to modify permission configurations and escalate privileges on subsequent calls.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.