Access Control Issue in OpenProject from OPF
CVE-2026-67529

4.3MEDIUM

Key Information:

Vendor

Opf

Status
Openproject
Vendor
CVE Published:
30 July 2026

What is CVE-2026-67529?

OpenProject, a web-based project management software, has an access control vulnerability that affects versions prior to 17.6.0. The vulnerability allows users with permissions to view time and cost entries to access sensitive information linked to private work packages. Specifically, the GET requests for '/api/v3/time_entries' and '/api/v3/cost_entries' do not adequately check visibility permissions, potentially exposing private work package subject lines and IDs. This issue has been resolved in version 17.6.0, so users are encouraged to update their installations to mitigate the risk.

Affected Version(s)

openproject < 17.6.0

References

https://github.com/opf/openproject/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/opf/openproject/pull/23888
x_refsource_MISC
https://github.com/opf/openproject/pull/23936
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.