https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-12T17:27:34.624716+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/ubuntu-cve-2021-42717 UBUNTU-CVE-2021-42717 2026-10-12T17:27:34.695913+00:00

Affected: Ubuntu:Pro:16.04:LTS: modsecurity-apache, Ubuntu:Pro:18.04:LTS: modsecurity-apache, Ubuntu:20.04:LTS: modsecurity-apache, Ubuntu:20.04:LTS: modsecurity, Ubuntu:22.04:LTS: modsecurity, Ubuntu:24.04:LTS: modsecurity, Ubuntu:25.10: modsecurity, Ubuntu:26.04:LTS: modsecurity

ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.