Basecamp's Google Sign-In adds Google sign-in to Rails applications. Prior to version 1.3.1, it is possible to redirect a user to another origin if the "proceed_to" value in the session store is set to a protocol-relative URL. Normally the value of this URL is only written and read by the library or the calling application. However, it may be possible to set this session value from a malicious site with a form submission. Any Rails applications using the google_sign_in gem may be vulnerable, if this vector can be chained with another attack that is able to modify the OAuth2 request parameters. This issue has been patched in version 1.3.1. There are no workarounds.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-26391 Google Sign-In for Rails allowed redirect to protocol-relative URI
Github GHSA Github GHSA GHSA-5jch-xhw4-r43v Google Sign-In for Rails allowed redirect to protocol-relative URI
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 02 Sep 2025 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Basecamp
Basecamp basecamp
Vendors & Products Basecamp
Basecamp basecamp

Tue, 02 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 29 Aug 2025 21:15:00 +0000

Type Values Removed Values Added
Description Basecamp's Google Sign-In adds Google sign-in to Rails applications. Prior to version 1.3.1, it is possible to redirect a user to another origin if the "proceed_to" value in the session store is set to a protocol-relative URL. Normally the value of this URL is only written and read by the library or the calling application. However, it may be possible to set this session value from a malicious site with a form submission. Any Rails applications using the google_sign_in gem may be vulnerable, if this vector can be chained with another attack that is able to modify the OAuth2 request parameters. This issue has been patched in version 1.3.1. There are no workarounds.
Title Basecamp's Google Sign-In for Rails allowed redirects to protocol-relative URI
Weaknesses CWE-601
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-09-02T13:52:49.721Z

Reserved: 2025-08-22T14:30:32.222Z

Link: CVE-2025-58067

cve-icon Vulnrichment

Updated: 2025-09-02T13:52:46.148Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-08-29T21:15:36.480

Modified: 2025-09-02T15:55:35.520

Link: CVE-2025-58067

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-02T15:23:32Z