cve 2026-7790

CVE-2026-7790 is a high-severity denial-of-service vulnerability in the ninenines cowlib Erlang library, affecting versions from 0.6.0 before 2.16.1. The flaw allows oversized HTTP chunk-size fields to cause excessive CPU and memory consumption in exposed Erlang-based services. Although listed in Microsoft's Security Update Guide, it is not a traditional Windows vulnerability. Mitigation requires updating cowlib to version 2.16.1 or later. The tag covers discussion of the CVE, its impact on Erlang services, and the importance of dependency management in modern infrastructure.