CVE-2025-61594
highpriority · track · 30EPSS 0.006 · 46 %ileDEEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 0.5–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (40)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2025-2215Ruby: Schwachstelle ermöglicht Offenlegung von InformationenDeutsch2025-10-06csaf · cert_bundDE
Ein entfernter Angreifer kann eine Schwachstelle in Ruby ausnutzen, um Informationen offenzulegen
- GHSA-j4pr-3wm6-xx2rURI Credential Leakage Bypass over CVE-2025-272212025-12-30ghsa · osvUS
### Impact In affected URI version, a bypass exists for the fix to CVE-2025-27221 that can expose user credentials. 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. The vulnerability affects the `uri` gem bundled with the following Ruby series: * 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) ### Patches Upgrade to 0.12.5, 0.13.3 or 1.0.4 ### References * https://www.ruby-lang.org/en/news/2025/02/26/security-advisories/ * https://hackerone.com/reports/2957667
also known as (4)
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sources
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references (14)
External citations — patches, advisories, analysis.
- https://github.com/ruby/uri/commit/20157e3e29b125ff41f1d9662e2e3b1d066f5902cnnvd
- https://github.com/ruby/uri/commit/7e521b2da0833d964aab43019e735aea674e1c2ccnnvd
- https://github.com/ruby/uri/commit/d3116ca66a3b1c97dc7577f9d2d6e353f391cd6acnnvd
- https://github.com/ruby/uri/releasesPatchcnnvd
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-61594.ymlcnnvd
- https://www.ruby-lang.org/en/news/2025/10/07/uri-cve-2025-61594/cnnvd
- https://github.com/advisories/GHSA-22h5-pq3x-2gf2enisa_euvd
- https://github.com/ruby/uri/security/advisories/GHSA-j4pr-3wm6-xx2renisa_euvd
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