Arbitrary File Write Vulnerability in OpenProject by OPF
CVE-2026-25763

9.4CRITICAL

Key Information:

Vendor

Opf

Status
Openproject
Vendor
CVE Published:
6 February 2026

What is CVE-2026-25763?

OpenProject, a web-based project management solution, exhibits an arbitrary file write vulnerability in its repository changes endpoint, impacting versions before 16.6.7 and 17.0.3. The issue arises when a specially crafted 'rev' value is submitted, allowing attackers to insert command-line options into the git log execution path. This flaw permits unauthorized users with browse permissions to create or overwrite files on the server. Successfully exploiting this vulnerability can lead to remote code execution, enabling an attacker to execute shell scripts and potentially access sensitive files like '/etc/passwd'. Users are advised to update to the patched versions to mitigate this risk.

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Deploy the Patch

Affected Version(s)

openproject < 16.6.7 < 16.6.7

openproject < 17.0.3 < 17.0.3

References

https://github.com/opf/openproject/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/opf/openproject/releases/tag/v16.6.7
x_refsource_MISC
https://github.com/opf/openproject/releases/tag/v17.0.3
x_refsource_MISC

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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