CVE-2025-57821

Description

Basecamps Google Sign-In adds Google sign-in to Rails applications. Prior to version 1.3.0, it is possible to craft a malformed URL that passes the same origin check, resulting in the user being redirected to another origin. Rails applications configured to store the flash information in a session cookie may be vulnerable, if this can be chained with an attack that allows injection of arbitrary data into the session cookie. This issue has been patched in version 1.3.0. If upgrading is not possible at this time, a way to mitigate the chained attack can be done by explicitly setting SameSite=Lax or SameSite=Strict on the application session cookie.

Risk Information

Base Score

4.2

MODERATE

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS Score

Exploitation Probability

0.038

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2025-57821 are fixed in Ruby-google_sign_in 1.3.0	Windows
Vulnerabilities CVE-2025-57821 are fixed in Ruby-google_sign_in for Linux 1.3.0	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234