https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sat, 03 Oct 2026 19:36:28 +0000 https://vulnerability.circl.lu/vuln/CERTFR-2025-AVI-0967 CERTFR-2025-AVI-0967 https://vulnerability.circl.lu/vuln/CERTFR-2025-AVI-0967 https://vulnerability.circl.lu/vuln/bdu:2026-02917 bdu:2026-02917 https://vulnerability.circl.lu/vuln/bdu:2026-02917 https://vulnerability.circl.lu/vuln/brew-mailcatcher-cve-2025-61921 <p><strong>Affected:</strong> Homebrew: mailcatcher</p> <p>### Summary</p> <p>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 &lt; 3.2.</p> <p>### Details</p> <p>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.</p> <p>### Resources</p> <p>* 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 &gt;= 3.2)</p> <p><strong>Affected:</strong> Homebrew: mailcatcher</p> <p>### Summary</p> <p>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 &lt; 3.2.</p> <p>### Details</p> <p>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.</p> <p>### Resources</p> <p>* 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 &gt;= 3.2)</p> https://vulnerability.circl.lu/vuln/brew-mailcatcher-cve-2025-61921 https://vulnerability.circl.lu/vuln/fkie_cve-2025-61921 <p>Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, 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. 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. Version 4.2.0 fixes the issue.</p> <p>Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, 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. 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. Version 4.2.0 fixes the issue.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2025-61921 https://vulnerability.circl.lu/vuln/ghsa-mr3q-g2mv-mr4q <p><strong>Affected:</strong> RubyGems: sinatra</p> <p>### Summary</p> <p>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 &lt; 3.2.</p> <p>### Details</p> <p>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.</p> <p>### Resources</p> <p>* 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 &gt;= 3.2)</p> <p><strong>Affected:</strong> RubyGems: sinatra</p> <p>### Summary</p> <p>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 &lt; 3.2.</p> <p>### Details</p> <p>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.</p> <p>### Resources</p> <p>* 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 &gt;= 3.2)</p> https://vulnerability.circl.lu/vuln/ghsa-mr3q-g2mv-mr4q https://vulnerability.circl.lu/vuln/ubuntu-cve-2025-61921 <p><strong>Affected:</strong> Ubuntu:Pro:16.04:LTS: ruby-sinatra, Ubuntu:Pro:18.04:LTS: ruby-sinatra, Ubuntu:Pro:22.04:LTS: ruby-sinatra, Ubuntu:26.04:LTS: ruby-sinatra</p> <p>Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, 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. 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. Version 4.2.0 fixes the issue.</p> <p><strong>Affected:</strong> Ubuntu:Pro:16.04:LTS: ruby-sinatra, Ubuntu:Pro:18.04:LTS: ruby-sinatra, Ubuntu:Pro:22.04:LTS: ruby-sinatra, Ubuntu:26.04:LTS: ruby-sinatra</p> <p>Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, 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. 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. Version 4.2.0 fixes the issue.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2025-61921