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CVE-2026-27723

OpenProject: Insufficient access control leads to create Wiki objects belongs unpermitted projects

MEDIUM
5.3
CVSS Score
Published: March 5, 2026 at 04:26 PM UTC
Updated: June 17, 2026 at 10:27 AM UTC
2 products affected across 2 vendorsOpenprojectOpenproject

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Openproject· Openproject
95%
v < 17.0.517.1.0 ≤ v < 17.1.2
Openproject· Opf
60%
v < 17.0.5v < 17.1.2
Affected range stops below 17.0.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.1.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/opf/openproject/security/advisories/GHSA-9gc6-3xjq-pwc9
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/opf/openproject/releases/tag/v17.0.5
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/opf/openproject/releases/tag/v17.1.2

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-284NVD-CWE-noinfo

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