OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`

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Summary

CVECVE-2026-46386
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-26 20:17:13 UTC
Updated2026-06-29 14:16:52 UTC
DescriptionOpenProject 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 .

Risk And Classification

Primary CVSS: v3.1 9.9 CRITICAL from [email protected]

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

EPSS: 0.002720000 probability, percentile 0.189290000 (date 2026-06-30)

Problem Types: CWE-502 | CWE-798 | CWE-1188 | CWE-1392 | CWE-502 CWE-502: Deserialization of Untrusted Data | CWE-798 CWE-798: Use of Hard-coded Credentials | CWE-1188 CWE-1188: Insecure Default Initialization of Resource | CWE-1392 CWE-1392: Use of Default Credentials

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED9.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Opf Openproject affected >= 8.3.0, < 17.2.4 Not specified
CNA Opf Openproject affected >= 17.3.0, < 17.3.2 Not specified

References

ReferenceSourceLinkTags
github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r [email protected] github.com
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