CVE-2026-46386
CRITICALOpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`
Title source: cnaDescription
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 .
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r
Scores
CVSS v3
9.9
EPSS
0.0027
EPSS Percentile
19.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-1188
CWE-1392
CWE-502
CWE-798
Status
published
Products (2)
opf/openproject
>= 17.3.0, < 17.3.2
opf/openproject
>= 8.3.0, < 17.2.4
Published
Jun 26, 2026
Tracked Since
Jun 27, 2026