Medium 4.2Published Aug 29, 2025

CVE-2025-58067Basecamp's Google Sign-In for Rails allowed redirects to protocol-relative URI

Updated under an hour ago (Oct 27, 2026, 3:50 PM ET)

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It affects basecamp google_sign_in. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for basecamp google_sign_in

Exploited in the last 30 days

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.

CVSS: 4.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-601
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 2, 2025
First seen by InfoSec Signals: Oct 18, 2026

Affected products

Affected products

basecamp google_sign_in basecamp:google_sign_in (from the name)	before 1.3.1	CNA record

References

References

https://github.com/basecamp/google_sign_in/security/advisories/GHSA-5jch-xhw4-r43v	x-refsource-confirm
https://github.com/basecamp/google_sign_in/pull/75	x-refsource-misc
https://github.com/basecamp/google_sign_in/commit/e97aef4626b1bcbd2c6f01f7dd25f12ac855d4cc	x-refsource-misc
https://github.com/basecamp/google_sign_in/releases/tag/v1.3.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.