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CVE Vulnerability Details :
CVE-2026-46386
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-26 Jun, 2026 | 19:26
Updated At-29 Jun, 2026 | 13:23
Rejected At-
▼CVE Numbering Authority (CNA)
OpenProject: Pre-authentication RCE in openproject/openproject Docker image via default `SECRET_KEY_BASE=OVERWRITE_ME` and `cookies_serializer = :marshal`

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 .

Affected Products
Vendor
opf
Product
openproject
Versions
Affected
  • >= 8.3.0, < 17.2.4
  • >= 17.3.0, < 17.3.2
Problem Types
TypeCWE IDDescription
CWECWE-502CWE-502: Deserialization of Untrusted Data
CWECWE-798CWE-798: Use of Hard-coded Credentials
CWECWE-1188CWE-1188: Insecure Default Initialization of Resource
CWECWE-1392CWE-1392: Use of Default Credentials
Type: CWE
CWE ID: CWE-502
Description: CWE-502: Deserialization of Untrusted Data
Type: CWE
CWE ID: CWE-798
Description: CWE-798: Use of Hard-coded Credentials
Type: CWE
CWE ID: CWE-1188
Description: CWE-1188: Insecure Default Initialization of Resource
Type: CWE
CWE ID: CWE-1392
Description: CWE-1392: Use of Default Credentials
Metrics
VersionBase scoreBase severityVector
3.19.9CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Version: 3.1
Base score: 9.9
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r
x_refsource_CONFIRM
Hyperlink: https://github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r
Resource:
x_refsource_CONFIRM
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found