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CVE

CVE-2025-61594

URI Credential Leakage Bypass over CVE-2025-27221
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CVE

CVE-2025-61594

URI Credential Leakage Bypass over CVE-2025-27221

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

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
2.7
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/ruby/uri/commit/20157e3e29b125ff41f1d9662e2e3b1d066f5902, https://github.com/ruby/uri/commit/7e521b2da0833d964aab43019e735aea674e1c2c, https://github.com/ruby/uri/commit/d3116ca66a3b1c97dc7577f9d2d6e353f391cd6a, https://github.com/ruby/uri, 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

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00022%
EPSS Percentile
0.05607%
Introduced Version
0,0.13.0,1.0.0
Fix Available
0.12.5,0.13.3,1.0.4

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