CVE-2022-31081: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in HTTP::Daemon

Security readout for executives and security teams

HTTP::Daemon before 6.15 can misunderstand malformed HTTP request bodies. In the wrong deployment, that parsing gap could let a request be interpreted differently by intermediaries and the Perl server, risking unauthorized API access or cache poisoning. The cited advisory says real-world exposure is uncertain because this library is often used for local development and testing. Exposure is most likely in Perl applications that run HTTP::Daemon below 6.15 as a reachable HTTP service. Risk is lower where it is only a local test or development dependency, or where production traffic is handled entirely by Apache, Nginx, or another server. Treat as a high-priority inventory-and-patch item, especially for internet-facing Perl services. The business urgency depends on whether HTTP::Daemon is actually in the production request path. Do not assume exposure from dependency presence alone. Mitigation focus: Upgrade HTTP::Daemon or libhttp-daemon-perl to version 6.15 or a vendor-fixed package.; Apply Debian or Fedora security updates where managed by those distributions.; If upgrade is blocked, reject abnormal Content-Length values with a 400 response..

Prepared

May 24, 2026, 09:54 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.