EUVD-2026-23870

| CVE-2026-40896 MEDIUM
2026-04-20 GitHub_M
Code Injection
6.5
CVSS 3.1
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CVSS VectorNVD

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

Lifecycle Timeline

2
Analysis Generated
Apr 20, 2026 - 16:23 vuln.today
patch_available
Apr 20, 2026 - 16:01 EUVD

DescriptionNVD

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.

AnalysisAI

OpenProject versions prior to 17.3.0 allow authenticated users with manage_agendas permission in any single project to inject malicious agenda items into meetings across all other projects on the instance, including projects to which the attacker has no access. The vulnerability requires only valid project membership with limited permissions and no knowledge of target meetings, enabling an attacker to systematically compromise meeting integrity across an entire OpenProject deployment. …

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EUVD-2026-23870 vulnerability details – vuln.today
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