RCE in Openproject
CVE-2026-22601
OpenProject is an open-source, web-based project management software. For OpenProject version 16.6.1 and below, a registered administrator can execute arbitrary command by configuring sendmail binary path and sending a test email. This issue has been patched in version 16.6.2.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000
Affected products
- Openproject
- Opf Openproject — versions < 16.6.2
Weakness classification (CWE)
References
- github.com/opf/openproject/security/advisories/GHSA-9vrv-7h26-c7jc (Vendor Advisory)
- github.com/opf/openproject/releases/tag/v16.6.2 (Release Notes)
Frequently asked questions
- What is CVE-2026-22601?
- CVE-2026-22601 is a high-severity vulnerability in Openproject, classified under Command Injection. CVSS score: 7.2/10. Published 2026-01-10.
- How severe is CVE-2026-22601?
- High severity. CVSS v3 base score is 7.2 out of 10.