# CVE-2026-40896

> Vulnerability · severity: **MEDIUM** (CVSS 6.5).

## 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.

## Key facts

- **CVE ID:** CVE-2026-40896
- **Published:** 2026-04-20
- **CVSS severity:** MEDIUM
- **CVSS base score:** 6.5
- **CWE codes:** CWE-367, CWE-639

## Affected products

- `openproject:openproject`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40896

## Citation

> AI Analytics. CVE-2026-40896. Retrieved 2026-07-14 from https://api.ai-analytics.org/cve/CVE-2026-40896. Derived from NIST NVD. Licensed CC0.

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