There is a possible ReDoS vulnerability in the Accept header parsing routines
of Action Dispatch. This vulnerability has been assigned the CVE identifier
CVE-2024-26142.

Versions Affected: >= 7.1.0, < 7.1.3.1 Not affected: < 7.1.0 Fixed Versions: 7.1.3.1

Impact

Carefully crafted Accept headers can cause Accept header parsing in
Action Dispatch to take an unexpected amount of time, possibly resulting in a
DoS vulnerability. All users running an affected release should either upgrade
or use one of the workarounds immediately.

Ruby 3.2 has mitigations for this problem, so Rails applications using
Ruby 3.2 or newer are unaffected.

Releases

The fixed releases are available at the normal locations.

Workarounds

There are no feasible workarounds for this issue.