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...
3.2
CVSS
Description
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.
Classification
CVE ID: CVE-2025-27221
CVSS Base Severity: LOW
CVSS Base Score: 3.2
CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
Affected Products
Vendor: ruby-lang
Product: URI
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 2.25% (scored less or equal to compared to others)
EPSS Date: 2025-04-01 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-27221https://hackerone.com/reports/2957667
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml