Medium severity · published Jul 30, 2026
CVE-2026-67529
OpenProject: Private work package subject/identity disclosure through the global Time Entries and Cost Entries APIs (linked work package rendered without visibility check)
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
OpenProject is open-source, web-based project management software. Prior to 17.6.0, GET /api/v3/time_entries and GET /api/v3/cost_entries rendered _links.workPackage.title and _links.workPackage.href through associated_resource in modules/costs/lib/api/v3/time_entries/time_entry_representer.rb and modules/costs/lib/api/v3/cost_entries/cost_entry_representer.rb without checking WorkPackage.visible or view_work_packages, allowing users with view_time_entries or view_cost_entries to read private work package subjects and ids. This issue is fixed in 17.6.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openproject · opf
< 17.6.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-67529
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-67529
github.com
https://github.com/opf/openproject/commit/9e9e562e516a647f35267df715d875f58b267c18
github.com
https://github.com/opf/openproject/commit/c31c2f958c8e72a0d0d748d728221d57f3ef9001
github.com
https://github.com/opf/openproject/pull/23888
github.com
https://github.com/opf/openproject/pull/23936
github.com
https://github.com/opf/openproject/releases/tag/v17.6.0
github.com
https://github.com/opf/openproject/security/advisories/GHSA-v3j7-vqwv-5w5q
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