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 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-367
• CWE-639

• https://github.com/opf/openproject/commit/8f693a1f35d0a84bb69af78fb6925f74329ae4fePatch
• https://github.com/opf/openproject/security/advisories/GHSA-hh5p-gwf8-h245Exploit, Mitigation, Vendor Advisory
• https://github.com/opf/openproject/security/advisories/GHSA-hh5p-gwf8-h245Exploit, Mitigation, Vendor Advisory

Published

Apr 20, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
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