CVE-2026-46386 — CRITICAL (9.9)

Vulnerability Description

OpenProject is open-source, web-based project management software. Prior to , the official openproject/openproject Docker image ships ENV SECRET_KEY_BASE=OVERWRITE_ME as the default Rails master key. Combined with cookies_serializer = :marshal, this gives any logged-in user a deterministic Marshal-deserialization path reachable via the /my/two_factor_devices cookie reader This vulnerability is fixed in .

CVSS Score

9.9

CRITICAL

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

Related Weaknesses (CWE)

CWE-798 CWE-502 CWE-1188 CWE-1392

References

https://github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r

FAQ

What is CVE-2026-46386?

CVE-2026-46386 is a vulnerability with a CVSS score of 9.9 (CRITICAL). OpenProject is open-source, web-based project management software. Prior to , the official openproject/openproject Docker image ships ENV SECRET_KEY_BASE=OVERWRITE_ME as the default Rails master key. ...

How severe is CVE-2026-46386?

CVE-2026-46386 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-46386?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.