CVE-2026-40896
Medium · 6.5CVSS
6.5
EPSS
0.2%
Published
Apr 20, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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