CVE-2026-88939— knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
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.
在版本 0.33.0 及之前， 操作被无条件地豁免于权限保护检查，这使得只读的 agent 会话能够绕过原有的访问限制。攻击者可以利用 将服务器指向另一个项目目录，从而获得写入权限。
Possible ATT&CK Techniques 1 AI
T1548 · Abuse Elevation Control Mechanism
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I. Basic Information for CVE-2026-88939
Vulnerability Information
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Vulnerability Title
knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
Source: CVE Program / CVE List V5
Vulnerability Description
knowns through 0.33.0 exempts the project.set action from permission guard checks unconditionally, allowing read-only agent sessions to bypass restrictions. Attackers can invoke project.set to repoint the server at another project directory and obtain write access capabilities.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| knowns-dev | knowns | 0 ~ 0.33.0 | - |
|
II. Public POCs for CVE-2026-88939
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-88939 (3)
Same Patch Batch · knowns-dev · 2026-09-10 · 5 CVEs total
| CVE-2026-88899 | 9.8 CRITICAL | knowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory |
| CVE-2026-88937 | 8.8 HIGH | knowns through 0.33.0 Path Traversal via Template Engine |
| CVE-2026-88938 | 6.5 MEDIUM | knowns through 0.33.0 Path Traversal via code.find MCP tool |
| CVE-2026-88940 | 5.3 MEDIUM | knowns through 0.33.0 Arbitrary Directory Enumeration via workspace browse endpoint |
IV. Related Vulnerabilities
Same product: knowns
-
CVE-2026-88940
knowns through 0.33.0 Arbitrary Directory Enumeration via wo -
CVE-2026-88938
knowns through 0.33.0 Path Traversal via code.find MCP tool -
CVE-2026-88937
knowns through 0.33.0 Path Traversal via Template Engine -
CVE-2026-88899
knowns before 0.31.0 External Control of Agent Working Direc -
CVE-2026-86775
knowns before 0.30.0 Path Traversal via Document API
Same vendor: knowns-dev
-
CVE-2026-88940
knowns through 0.33.0 Arbitrary Directory Enumeration via wo -
CVE-2026-88938
knowns through 0.33.0 Path Traversal via code.find MCP tool -
CVE-2026-88937
knowns through 0.33.0 Path Traversal via Template Engine -
CVE-2026-88899
knowns before 0.31.0 External Control of Agent Working Direc -
CVE-2026-86775
knowns before 0.30.0 Path Traversal via Document API
Same weakness: CWE-863
-
CVE-2026-88044
rclone: RC per-server auth-proxy bypass -
CVE-2026-88006
Open WebUI: Users denied by the OAuth role policy can still -
CVE-2026-88005
Open WebUI: Users denied by the OAuth domain allowlist or ro -
CVE-2026-88894
Snipe-IT before 8.7.2 Authorization Bypass via Predefined Ki -
CVE-2026-88884
Renovate before 44.3.1 Authentication Bypass via Digest Upda
V. Comments for CVE-2026-88939
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