CVE-2026-40896
Last modified
CVE-2026-40896 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. OpenProject is open-source, web-based project management software. Prior to version 17.3.0, a user with `manage_agendas` permission in any project can inject agenda items into meetings belonging to any other project on the instance — even projects they have no access to. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
OpenProject is open-source, web-based project management software. Prior to version 17.3.0, a user with `manage_agendas` permission in any project can inject agenda items into meetings belonging to any other project on the instance — even projects they have no access to. No knowledge of the target project, meeting, or victim is required; the attacker can blindly spray items into every meeting on the instance by iterating sequential section IDs. Version 17.3.0 patches the issue.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Openproject | Openproject | < 17.3.0 |
References
- https://github.com/opf/openproject/security/advisories/GHSA-hh5p-gwf8-h245Exploit, Mitigation, Vendor Advisory
- https://github.com/opf/openproject/security/advisories/GHSA-hh5p-gwf8-h245Exploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-40896?
How severe is CVE-2026-40896?
How do I fix CVE-2026-40896?
Are you affected by CVE-2026-40896?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST