{"id":"RLSA-2021:2988","summary":"Important: varnish:6 security update","details":"Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up.\n\nSecurity Fix(es):\n\n* varnish: HTTP/2 request smuggling attack via a large Content-Length header for a POST request (CVE-2021-36740)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-02-04T23:45:04.552807Z","published":"2021-08-02T14:30:38Z","upstream":["CVE-2021-36740"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:2988"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1982409"}],"affected":[{"package":{"name":"varnish","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/varnish?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:6.0.6-2.module+el8.3.0+179+20b582cc"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:2988.json"}},{"package":{"name":"varnish-modules","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/varnish-modules?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.15.0-5.module+el8.3.0+179+20b582cc"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:2988.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}