What is the CVSS score of CVE-2026-25763?

CVE-2026-25763 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Openproject are affected by CVE-2026-25763?

OpenProject instances are vulnerable to arbitrary file write attacks through the repository changes endpoint, potentially allowing attackers to compromise system integrity and gain unauthorized…

How to fix or mitigate CVE-2026-25763?

Within 24 hours: Disable or restrict access to the /projects/:project_id/repository/changes endpoint via WAF or network controls; audit logs for suspicious activity on this endpoint. Within 7 days: Implement network segmentation to limit repository access; establish a change management plan for version upgrades. Within 30 days: Upgrade to OpenProject 16.6.7 or 17.0.3 when patches are released; conduct a full security assessment of the affected instance.

Openproject CVE-2026-25763

CRITICAL

OS Command Injection (CWE-78)

2026-02-06 security-advisories@github.com

RCE Openproject

9.9

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Feb 06, 2026 - 22:16 nvd

CRITICAL 9.9

DescriptionGitHub Advisory

OpenProject is an open-source, web-based project management software. Prior to versions 16.6.7 and 17.0.3, an arbitrary file write vulnerability exists in OpenProject’s repository changes endpoint (/projects/:project_id/repository/changes) when rendering the “latest changes” view via git log. By supplying a specially crafted rev value (for example, rev=--output=/tmp/poc.txt), an attacker can inject git log command-line options. When OpenProject executes the SCM command, Git interprets the attacker-controlled rev as an option and writes the output to an attacker-chosen path. As a result, any user with the :browse_repository permission on the project can create or overwrite arbitrary files that the OpenProject process user is permitted to write. The written contents consist of git log output, but by crafting custom commits the attacker can still upload valid shell scripts, ultimately leading to RCE. The RCE lets the attacker create a reverse shell to the target host and view confidential files outside of OpenProject, such as /etc/passwd. This issue has been patched in versions 16.6.7 and 17.0.3.