CVE-2026-40896
OpenProject has Cross-Project Meeting Agenda Item Injection via Unscoped Section Lookup
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-367 CWE-639 |
| Vendor | opf |
| Product | openproject |
| Published | Apr 20, 2026 |
| Last Updated | Apr 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
opf / openproject
< 17.3.0