CVE-2026-40896OpenProject has Cross-Project Meeting Agenda Item Injection via Unscoped Section Lookup
Updated under an hour ago ()
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It affects opf openproject and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-367, CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Apr 20, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
opf openproject opf:openproject (from the name) | before 17.3.0 | CNA record |
openproject openproject openproject:openproject | before 17.3.0 | NVD |
References
- https://github.com/opf/openproject/security/advisories/GHSA-hh5p-gwf8-h245x-refsource-confirm, exploit, mitigation, vendor-advisory
- https://github.com/opf/openproject/commit/8f693a1f35d0a84bb69af78fb6925f74329ae4fex-refsource-misc, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.