Vulnerability Report

CVE-2025-61594

Title: Credential leakage in URI module due to bypass of CVE-2025-27221 fix

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2025-61594.

CWE Category CWE-212
Published Date Dec 30, 2025
Modified Date Apr 16, 2026
Exploit Status Not Found
Score 2.1 CVSS v4.0
Exploit Probability (EPSS)
0.01%

Vulnerability Summary

CVE-2025-61594: 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.

Impacted Vendors

L
lambdaisland 1
R
ruby-lang 1

Reference Links

https://github.com/ruby/uri/commit/20157e3e29b125ff41f1d9662e2e3b1d066f5902 https://github.com/ruby/uri/commit/7e521b2da0833d964aab43019e735aea674e1c2c https://github.com/ruby/uri/commit/d3116ca66a3b1c97dc7577f9d2d6e353f391cd6a https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-61594.yml https://www.ruby-lang.org/en/news/2025/10/07/uri-cve-2025-61594/
CVSS v4.0
Source Entity [email protected]
Severity LOW
2.1
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
N/A
RAW VECTOR CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-61594 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected Stack

No specific products linked.