CVE-2026-40896: 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…

PriorityP340high7.1CVSS 3.1

AVNACLPRLUINSUCLIHAN

EPSS

0.17%

7.1th percentile

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

2 ranges

Vendor	Product	Version range	Fixed in
openproject	openproject	< 17.3.0	17.3.0
opf	openproject	< 17.3.0	17.3.0

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