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CVE-2026-22601

Good to know:

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Date: January 9, 2026

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.

Severity Score

Related Resources (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-22601
https://github.com/opf/openproject/security/advisories/GHSA-9vrv-7h26-c7jc
https://github.com/opf/openproject/releases/tag/v16.6.2
https://www.mend.io/vulnerability-database/CVE-2026-22601

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements used in a Command ('Command Injection')

CWE-77

Top Fix

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Upgrade Version

Upgrade to version https://github.com/opf/openproject.git - v16.6.2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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