CVE-2025-27221: URI allows for userinfo Leakage in URI#join, URI#merge, and URI#+

CVE-2025-27221 · Severity: low · CVSS 3.1 · Published 2025-03-03

URI allows for userinfo Leakage in URI#join, URI#merge, and URI#+

Technologies: uri (RubyGems). Vendors: RubyGems.

Quick answers

Is CVE-2025-27221 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-27221 being exploited in the wild.
How severe is CVE-2025-27221?
Low severity, with a CVSS score of 3.1, published 3 March 2025.
Which products and versions are affected?
uri (RubyGems) ECOSYSTEM:introduced=0,fixed=0.11.3.
Is there a fix for CVE-2025-27221?
Yes. uri (RubyGems): upgrade to 0.11.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-27221?
Check whether you run uri (RubyGems) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • uri (RubyGems): upgrade to 0.11.3 or later
    bundle update uri

Affected products

  • uri (RubyGems) ECOSYSTEM:introduced=0,fixed=0.11.3

Identifiers

  • CVE-2025-27221
  • GHSA-22h5-pq3x-2gf2

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