It was discovered that Rack incorrectly handled certain regular expressions. A remote attacker could possibly use this issue to cause Rack to consume resources, leading to a denial of service. (CVE-2023-27539)
It was discovered that Rack incorrectly handled Multipart MIME parsing. A remote attacker could possibly use this issue to cause Rack to consume resources, leading to a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-27530)
1.5.2-3+deb8u3ubuntu1~esm71.6.4-3ubuntu0.2+esm51.6.4-4ubuntu0.2+esm52.0.7-2ubuntu0.1+esm42.1.4-5ubuntu1+esm4