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CVE-2026-86544— knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions

Quick assessment

Affected

knowns-dev knowns

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Knowns.dev Knowns是Knowns.dev组织的一款知识管理应用。 Knowns.dev Knowns 0.30.0之前版本存在授权问题漏洞，该漏洞源于将可变代码操作错误分类为只读操作，导致授权绕过，具有只读受限会话的攻击者可利用code.replace修改权限配置并在后续调用中提升权限。

CVSS 8.1 · High EPSS 0.58% · P47 Updated Sep 28, 2026

Possible ATT&CK Techniques 3 AI

T1190 · Exploit Public-Facing Application T1210 · Exploitation of Remote Services T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 2

Vendor	Product	Version Range	Status
knowns-dev	knowns	`< 0.30.0`	affected
		`0.30.0`	unaffected

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I. Basic Information for CVE-2026-86544

Vulnerability Information

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Vulnerability Title

knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制不正确

Source: CVE Program / CVE List V5

Vulnerability Title

Knowns.dev Knowns 授权问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
knowns-dev	knowns	0 ~ 0.30.0	-

II. Public POCs for CVE-2026-86544

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-86544

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Patches & Fixes for CVE-2026-86544 (3)

🔗 fix(security): guard code mutations · knowns-dev/knowns@a2c98fc · GitHub Read full article patch
🔗 knowns/internal/permissions/guard.go at v0.29.1 · knowns-dev/knowns · GitHub Read full article technical-description
🔗 knowns/internal/permissions/registry.go at v0.29.1 · knowns-dev/knowns · GitHub Read full article technical-description

Vendor Advisories for CVE-2026-86544 (2)

Vendor Pages for CVE-2026-86544 (1)

🔗 Release v0.30.0 · knowns-dev/knowns · GitHub release-notes

https://www.cve.org/CVERecord?id=CVE-2026-86544

Same Patch Batch · knowns-dev · 2026-09-07 · 8 CVEs total

CVE-2026-86543	9.8 CRITICAL	knowns before 0.30.0 Unauthenticated Management API Exposure
CVE-2026-86542	9.1 CRITICAL	knowns before 0.30.0 Path Traversal via Import Name
CVE-2026-86439	8.8 HIGH	knowns before 0.30.0 Path Traversal via MCP doc and memory tools
CVE-2026-86541	8.3 HIGH	knowns before 0.30.0 Path Traversal via code.replace MCP action
CVE-2026-86540	7.8 HIGH	knowns before 0.30.0 Arbitrary Code Execution via LSP Binary
CVE-2026-86538	7.5 HIGH	knowns before 0.30.0 Path Traversal via templateFile parameter
CVE-2026-86539	7.2 HIGH	knowns through 0.33.0 Server-Side Request Forgery via embedding-models endpoint

IV. Related Vulnerabilities

Same product: knowns

Same vendor: knowns-dev

Same weakness: CWE-863