VulnerabilityAnalyzed

CVE-2026-22601

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.

HIGH 8.6EPSS 0.37%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 4.0: 8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.37% probability · 30th percentile
CISA KEV: Not listed
Weakness: CWE-77
Affected: openproject/openproject
Source: security-advisories@github.com

References

https://github.com/opf/openproject/releases/tag/v16.6.2Release Notes
https://github.com/opf/openproject/security/advisories/GHSA-9vrv-7h26-c7jcVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.