CVE-2026-39374— Plane IDOR: Cross-Project Issue Date Modification via Bulk Update Endpoint
Quick assessment
Affected
makeplane plane
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.
Plane是Plane开源的一个开源、自托管的项目规划工具。 Plane 1.3.0之前版本存在安全漏洞，该漏洞源于IssueBulkUpdateDateEndpoint缺少工作区或项目过滤，可能导致跨边界数据修改。
Possible ATT&CK Techniques 1 AI
T1114 · Email Collection
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I. Basic Information for CVE-2026-39374
Vulnerability Information
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Vulnerability Title
Plane IDOR: Cross-Project Issue Date Modification via Bulk Update Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Plane is an an open-source project management tool. Prior to 1.3.0, the IssueBulkUpdateDateEndpoint allows a project member (ADMIN or MEMBER) to modify the start_date and target_date of ANY issue across the entire Plane instance, regardless of workspace or project membership. The endpoint fetches issues by ID without filtering by workspace or project, enabling cross-boundary data modification. This vulnerability is fixed in 1.3.0.
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:N
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 1.3.0之前版本存在安全漏洞，该漏洞源于IssueBulkUpdateDateEndpoint缺少工作区或项目过滤，可能导致跨边界数据修改。
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
II. Public POCs for CVE-2026-39374
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-39374 (1)
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V. Comments for CVE-2026-39374
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