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Critical 9.4Published Jan 28, 2026

CVE-2026-24685OpenProject has Argument Injection on Repository module that allows Arbitrary File Write

Updated under an hour ago ()

Does this affect you?

It affects opf openproject and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

OpenProject is an open-source, web-based project management software. Versions prior to 16.6.6 and 17.0.2 have an arbitrary file write vulnerability in OpenProject’s repository diff download endpoint (`/projects/:project_id/repository/diff.diff`) when rendering a single revision via git show. By supplying a specially crafted rev value (for example, `rev=--output=/tmp/poc.txt)`, an attacker can inject git show 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 show output (commit metadata and patch), but overwriting application or configuration files still leads to data loss and denial of service, impacting integrity and availability. The issue has been fixed in OpenProject 17.0.2 and 16.6.6.

CVSS
9.4 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Weakness (CWE)
CWE-77
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Jan 28, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
opf openproject
opf:openproject (from the name)
before 16.6.6; from 17.0.0, < 17.0.2
CNA record
openproject openproject
openproject:openproject
before 16.6.6; from 17.0.0 before 17.0.2
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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