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CVE-2025-27221

Good to know:

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Date: March 2, 2025

In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent leakage of authentication credentials because userinfo is retained even after changing the host.

Severity Score

Related Resources (12)

https://www.cve.org/CVERecord?id=CVE-2025-27221
https://hackerone.com/reports/2957667
https://github.com/ruby/uri/pull/156
https://github.com/ruby/uri/pull/157
https://github.com/ruby/uri/pull/154
https://github.com/ruby/uri/pull/155
https://nvd.nist.gov/vuln/detail/CVE-2025-27221
https://github.com/ruby/uri
https://www.ruby-lang.org/en/news/2025/02/26/security-advisories
https://security-tracker.debian.org/tracker/CVE-2025-27221
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml
https://www.mend.io/vulnerability-database/CVE-2025-27221

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Improper Removal of Sensitive Information Before Storage or Transfer

CWE-212

Top Fix

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Upgrade Version

Upgrade to version uri - 0.13.2;uri - 1.0.3;uri - 0.12.4;uri - 0.11.3

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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