CVE-2026-46386

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 v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

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

Configurations

No configuration.

History

25 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) OpenProject es un software de gestión de proyectos de código abierto y basado en la web. Antes de , la imagen oficial de Docker openproject/openproject incluye ENV SECRET_KEY_BASE=OVERWRITE_ME como clave maestra predeterminada de Rails. Combinado con cookies_serializer = :marshal, esto otorga a cualquier usuario autenticado una ruta de deserialización Marshal determinista accesible a través del lector de cookies /my/two_factor_devices. Esta vulnerabilidad está corregida en .

Information

Published : 2026-06-26 20:17

Updated : 2026-10-25 17:10

NVD link : CVE-2026-46386

Mitre link : CVE-2026-46386

CVE.ORG link : CVE-2026-46386

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

CWE-798

Use of Hard-coded Credentials

CWE-1188

Initialization of a Resource with an Insecure Default

CWE-1392

Use of Default Credentials

{"id": "CVE-2026-46386", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46386", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-29T13:23:02.803038Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.9, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "opf", "product": "openproject", "versions": [{"status": "affected", "version": ">= 8.3.0, < 17.2.4"}, {"status": "affected", "version": ">= 17.3.0, < 17.3.2"}]}]}], "published": "2026-06-26T20:17:13.380", "references": [{"url": "https://github.com/opf/openproject/security/advisories/GHSA-r85r-gjq2-f83r", "source": "security-advisories@github.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-502"}, {"lang": "en", "value": "CWE-798"}, {"lang": "en", "value": "CWE-1188"}, {"lang": "en", "value": "CWE-1392"}]}], "descriptions": [{"lang": "en", "value": "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 ."}, {"lang": "es", "value": "OpenProject es un software de gesti\u00f3n de proyectos de c\u00f3digo abierto y basado en la web. Antes de , la imagen oficial de Docker openproject/openproject incluye ENV SECRET_KEY_BASE=OVERWRITE_ME como clave maestra predeterminada de Rails. Combinado con cookies_serializer = :marshal, esto otorga a cualquier usuario autenticado una ruta de deserializaci\u00f3n Marshal determinista accesible a trav\u00e9s del lector de cookies /my/two_factor_devices. Esta vulnerabilidad est\u00e1 corregida en ."}], "lastModified": "2026-10-25T17:10:00.197", "sourceIdentifier": "security-advisories@github.com"}