https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-03T19:36:28.805714+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/CERTFR-2025-AVI-0967 CERTFR-2025-AVI-0967 — De multiples vulnérabilités ont été découvertes dans les produits VMware. Elles permettent à un attaquant de provoquer… 2026-10-03T19:36:28.834619+00:00 CERTFR-2025-AVI-0967 https://vulnerability.circl.lu/vuln/bdu:2026-02917 bdu:2026-02917 2026-10-03T19:36:28.834755+00:00 bdu:2026-02917 https://vulnerability.circl.lu/vuln/brew-mailcatcher-cve-2025-61921 BREW-mailcatcher-CVE-2025-61921 — Sinatra is vulnerable to ReDoS through ETag header value generation 2026-10-03T19:36:28.834786+00:00

Affected: Homebrew: mailcatcher

### 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)

 https://vulnerability.circl.lu/vuln/fkie_cve-2025-61921 fkie_cve-2025-61921 2026-10-03T19:36:28.834882+00:00

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.

 https://vulnerability.circl.lu/vuln/ghsa-mr3q-g2mv-mr4q GHSA-mr3q-g2mv-mr4q — Sinatra is vulnerable to ReDoS through ETag header value generation 2026-10-03T19:36:28.834938+00:00

Affected: RubyGems: sinatra

### 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)

 https://vulnerability.circl.lu/vuln/ubuntu-cve-2025-61921 UBUNTU-CVE-2025-61921 2026-10-03T19:36:28.834993+00:00

Affected: 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

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.