2.1 Low

CVE-2025-61594 URI is a module providing classes to handle Uniform Resource Identifiers

Description

URI is a module providing classes to handle Uniform Resource Identifiers. In versions 0.12.4 and earlier (bundled in Ruby 3.2 series) 0.13.2 and earlier (bundled in Ruby 3.3 series), 1.0.3 and earlier (bundled in Ruby 3.4 series), when using the + operator to combine URIs, sensitive information like passwords from the original URI can be leaked, violating RFC3986 and making applications vulnerable to credential exposure. This is a a bypass for the fix to CVE-2025-27221 that can expose user credentials. This issue has been fixed in versions 0.12.5, 0.13.3 and 1.0.4.

Affected products and versions

Product	Affected versions	Fixed in
uri 1.0	1.0.0 → < 1.0.4	1.0.4
uri 0.13	0.13.0 → < 0.13.3	0.13.3
uri 0.12	earliest → < 0.12.5	0.12.5

References

github.com github.com
hackerone.com hackerone.com
github.com github.com
www.ruby-lang.org www.ruby-lang.org

Timeline

Published December 30, 2025
Last modified April 16, 2026

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