chore(deps): update dependency sinatra to v4.2.0 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
sinatra (source, changelog)	4.1.0 -> 4.2.0

GitHub Vulnerability Alerts

CVE-2025-61921

Summary

There is a denial of service vulnerability in the If-Match and If-None-Match header parsing component of Sinatra, if the etag method is used when constructing the response and you are using Ruby < 3.2.

Details

Carefully crafted input can cause If-Match and If-None-Match header parsing in Sinatra to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is typically involved in generating the ETag header value. Any applications that use the etag method when generating a response are impacted if they are using Ruby below version 3.2.

Resources

• https://github.com/sinatra/sinatra/issues/2120 (report)
• https://github.com/sinatra/sinatra/pull/2121 (fix)
• https://github.com/sinatra/sinatra/pull/1823 (older ReDoS vulnerability)
• https://bugs.ruby-lang.org/issues/19104 (fix in Ruby >= 3.2)

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Release Notes

sinatra/sinatra (sinatra)

v4.2.0

Compare Source

• New: Add :static_headers setting for custom headers in static file responses (#​2089)
• Fix: Fix regex in etag_matches? to prevent ReDoS (#​2121)
• Fix: PATH_INFO can never be empty (#​2114)
• Fix: Fix malformed Content-Type headers (#​2081)
• Fix: Avoid crash for integer values in content_type parameters (#​2078)

v4.1.1

Compare Source

• Fix: Restore WEBrick support (#​2067)

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