Paper/Archive/CVE-2026-46386

CVE-2026-46386

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

EPSS 0.5%CVSS 9.9

critical.is priorityof 100

CVSS 9.9 (CNA)9.9 / 10 × 3029.7 Not in CISA KEV+300.0 EPSS percentile 42.2.422 × 208.4 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

openproject>= 8.3.0, < 17.2.4–CNA

openproject>= 17.3.0, < 17.3.2–CNA

Scores by source

GitHub_M (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r