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GHSA-22h5-pq3x-2gf2

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

Source: GitHub Advisory Database (reviewed) Low CVE-2025-27221

Packages

EcosystemPackageAffectedFixed in
RubyGems uri < 0.11.3 0.11.3
RubyGems uri >= 0.12.0, < 0.12.4 0.12.4
RubyGems uri >= 0.13.0, < 0.13.2 0.13.2
RubyGems uri >= 1.0.0, < 1.0.3 1.0.3

Details

As written in the advisory (Markdown source, shown as plain text).

There is a possibility for userinfo leakage by in the uri gem. This vulnerability has been assigned the CVE identifier CVE-2025-27221. We recommend upgrading the uri gem. ## Details The methods `URI#join`, `URI#merge`, and `URI#+` retained userinfo, such as `user:password`, even after the host is replaced. When generating a URL to a malicious host from a URL containing secret userinfo using these methods, and having someone access that URL, an unintended userinfo leak could occur. Please update URI gem to version 0.11.3, 0.12.4, 0.13.2, 1.0.3 or later. ## Affected versions uri gem versions < 0.11.3, 0.12.0 to 0.12.3, 0.13.0, 0.13.1 and 1.0.0 to 1.0.2. ## Credits Thanks to Tsubasa Irisawa (lambdasawa) for discovering this issue. Also thanks to nobu for additional fixes of this vulnerability.

References

External links from the advisory. They lead to third-party sites.