Medium severity · published Mar 5, 2026
CVE-2026-27723
OpenProject: Insufficient access control leads to create Wiki objects belongs unpermitted projects
5.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 13% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openproject · opf
< 17.0.5; < 17.1.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27723
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27723
Product
https://github.com/opf/openproject/releases/tag/v17.0.5
Product
https://github.com/opf/openproject/releases/tag/v17.1.2
Vendor Advisory
https://github.com/opf/openproject/security/advisories/GHSA-9gc6-3xjq-pwc9
More from openproject
9.9
CVE-2026-46386
OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`
9.9
CVE-2026-52782
OpenProject: IDOR through /projects/<A>/settings/project_storages/<A_ps_id> via PATCH parameter "storages_project_storage[project_folder_id]" leads to Access to Unauthorized Resources
9.9
CVE-2026-52785
OpenProject: SQL injection in timestamps functionality
9.9
CVE-2026-25763
Command Injection on OpenProject repositories leads to Remote Code Execution
9.6
CVE-2026-52780
OpenProject: Cache store poisoning leads to Remote Code Execution (RCE)