CVE-2026-27723— OpenProject: Insufficient access control leads to create Wiki objects belongs unpermitted projects
Quick assessment
Affected
opf openproject
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.
OpenProject是OpenProject开源的一个基于Web的项目管理软件。 OpenProject 17.0.5之前版本和17.1.2之前版本存在访问控制错误漏洞，该漏洞源于身份验证不当的请求，可能导致创建未授权项目的wiki页面。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-27723
Vulnerability Information
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Vulnerability Title
OpenProject: Insufficient access control leads to create Wiki objects belongs unpermitted projects
Source: CVE Program / CVE List V5
Vulnerability Description
OpenProject is an open-source, web-based project management software. Prior to versions 17.0.5 and 17.1.2, an attacker can create wiki pages belonging to unpermitted projects through an improperly authenticated request. This issue has been patched in versions 17.0.5 and 17.1.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenProject 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenProject是OpenProject开源的一个基于Web的项目管理软件。 OpenProject 17.0.5之前版本和17.1.2之前版本存在访问控制错误漏洞，该漏洞源于身份验证不当的请求，可能导致创建未授权项目的wiki页面。
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 |
|---|---|---|---|---|
| opf | openproject | < 17.0.5 | - |
|
II. Public POCs for CVE-2026-27723
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-27723 (1)
Vendor Pages for CVE-2026-27723 (2)
-
Release OpenProject 17.0.5 · opf/openproject · GitHub x_refsource_MISC
-
Release OpenProject 17.1.2 · opf/openproject · GitHub x_refsource_MISC
IV. Related Vulnerabilities
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CVE-2026-55095
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CVE-2026-44733
OpenProject: Business Logic Error on OpenProject through PAT
Same vendor: opf
-
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CVE-2026-67527
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OpenProject: Business Logic Error on OpenProject through PAT
Same weakness: CWE-284
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V. Comments for CVE-2026-27723
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