CVE-2026-40896
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
64/100
Published: 2026-04-20
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
High
A:
None
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.
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| openproject | openproject | < 17.3.0 |
References & Advisories (2)
Patch
Exploit
Mitigation
Vendor Advisory