CVE-2026-22605: OpenProject is Vulnerable to Insecure Direct Object Reference in Meetings

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-10 · updated 2026-06-17
Weakness: CWE-284

Description

OpenProject is an open-source, web-based project management software. OpenProject versions prior to version 16.6.3, allowed users with the View Meetings permission on any project, to access meeting details of meetings that belonged to projects, the user does not have access to. This issue has been patched in version 16.6.3.

Affected products

opf openproject: before 16.6.3 — fixed in 16.6.3

How to fix

Upgrade to a fixed version: opf openproject 16.6.3. Check the vendor advisory for mitigations.

References

https://github.com/opf/openproject/releases/tag/v16.6.3
https://github.com/opf/openproject/security/advisories/GHSA-fq4m-pxvm-8x2j

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