https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-29T02:55:16.105467+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2023-27539 CVE-2023-27539 2026-09-29T02:55:16.142820+00:00

Affected: Rails Rack

There is a denial of service vulnerability in the header parsing component of Rack.

 https://vulnerability.circl.lu/vuln/ghsa-c6qg-cjj8-47qp GHSA-c6qg-cjj8-47qp — Possible Denial of Service Vulnerability in Rack's header parsing 2026-09-29T02:55:16.142914+00:00

Affected: RubyGems: rack

There is a denial of service vulnerability in the header parsing component of Rack. This vulnerability has been assigned the CVE identifier CVE-2023-27539.

Versions Affected: >= 2.0.0 Not affected: None. Fixed Versions: 2.2.6.4, 3.0.6.1

# Impact Carefully crafted input can cause header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse headers using Rack (virtually all Rails applications) are impacted.

# Workarounds Setting Regexp.timeout in Ruby 3.2 is a possible workaround.