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CVE-2026-46558— Plane: Cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces

Quick assessment

Affected
makeplane plane
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Plane是Plane开源的一个开源、自托管的项目规划工具。 Plane 1.3.1之前版本存在安全漏洞，该漏洞源于跨工作区资产授权绕过，允许任何经过身份验证的用户读取、复制、删除和覆盖其他工作区中的资产。

CVSS 8.3 · High EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
makeplane plane < 1.3.1 affected
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I. Basic Information for CVE-2026-46558

Vulnerability Information
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Vulnerability Title
Plane: Cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces
Source: CVE Program / CVE List V5
Vulnerability Description
Plane is an open-source project management tool. Prior to version 1.3.1, there is a cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces. This issue has been patched in version 1.3.1.
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
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Plane 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Plane是Plane开源的一个开源、自托管的项目规划工具。 Plane 1.3.1之前版本存在安全漏洞，该漏洞源于跨工作区资产授权绕过，允许任何经过身份验证的用户读取、复制、删除和覆盖其他工作区中的资产。
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
makeplane plane < 1.3.1 -

II. Public POCs for CVE-2026-46558

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9895 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-46558

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Vendor Advisories for CVE-2026-46558 (1)

Vendor Pages for CVE-2026-46558 (1)

IV. Related Vulnerabilities

Same product: plane
Same vendor: makeplane
Same weakness: CWE-639

V. Comments for CVE-2026-46558

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