CVE-2025-27221

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.

CVSS v3 3.2 LOW

3.2^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.4 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml	Third Party Advisory
https://hackerone.com/reports/2957667	Permissions Required
https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:ruby-lang:uri::::::ruby::*
	cpe:2.3:a:ruby-lang:uri::::::ruby::*
	cpe:2.3:a:ruby-lang:uri::::::ruby::*
	cpe:2.3:a:ruby-lang:uri::::::ruby::*

History

03 Nov 2025, 22:18

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html -

03 Nov 2025, 20:18

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html -

01 Aug 2025, 02:06

Type	Values Removed	Values Added
Summary		(es) En la gema URI anterior a 1.0.3 para Ruby, los métodos de gestión de URI (URI.join, URI#merge, URI#+) tienen una fuga involuntaria de credenciales de autenticación porque la información del usuario se conserva incluso después de cambiar el host.
First Time		Ruby-lang Ruby-lang uri
References	~~() https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml -~~	() https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml - Third Party Advisory
References	~~() https://hackerone.com/reports/2957667 -~~	() https://hackerone.com/reports/2957667 - Permissions Required
CPE		cpe:2.3:a:ruby-lang:uri::::::ruby::*

04 Mar 2025, 00:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-03-04 00:15

Updated : 2025-11-03 22:18

NVD link : CVE-2025-27221

Mitre link : CVE-2025-27221

CVE.ORG link : CVE-2025-27221

JSON object : View

Products Affected

ruby-lang

uri

CWE

CWE-212

Improper Removal of Sensitive Information Before Storage or Transfer

{"id": "CVE-2025-27221", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 3.2, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 1.4}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2025-03-04T00:15:31.847", "references": [{"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://hackerone.com/reports/2957667", "tags": ["Permissions Required"], "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-212"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-212"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "En la gema URI anterior a 1.0.3 para Ruby, los m\u00e9todos de gesti\u00f3n de URI (URI.join, URI#merge, URI#+) tienen una fuga involuntaria de credenciales de autenticaci\u00f3n porque la informaci\u00f3n del usuario se conserva incluso despu\u00e9s de cambiar el host."}], "lastModified": "2025-11-03T22:18:43.737", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "DBED576B-ECD4-416D-93B7-4ACE5C950A6C", "versionEndExcluding": "0.11.3"}, {"criteria": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "201EB534-4240-4158-ACB0-C5179813CF59", "versionEndExcluding": "0.12.4", "versionStartIncluding": "0.12.0"}, {"criteria": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "8FB07CCD-3D32-4A0D-B614-D8A30625212E", "versionEndExcluding": "0.13.2", "versionStartIncluding": "0.13.0"}, {"criteria": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*", "vulnerable": true, "matchCriteriaId": "34E4B8C4-02CC-45DB-A2AC-E206E511CBDE", "versionEndExcluding": "1.0.3", "versionStartIncluding": "1.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}