{"answers":{"affected":"1 open source package ship an affected version, including varnish. It affects 5 products.","exploited":"There is no known exploitation of CVE-2021-36740 in the wild and no public exploit code.","fix":"Upgrade varnish to a fixed version for your release line: 5.2.2 or 6.6.1.","what":"CVE-2021-36740 is a medium-severity vulnerability in Debian Debian Linux, published on 14 Jul 2021."},"fix_prompt":"Check this codebase for CVE-2021-36740 and fix it if it is affected.\n\nWhat it is: CVE-2021-36740 is a medium-severity vulnerability in Debian Debian Linux, published on 14 Jul 2021. \nExploitation: There is no known exploitation of CVE-2021-36740 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- varnish (Bitnami): affected from 5.0.0; fixed in 5.2.2, 6.6.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-36740/ (Markdown: https://insights.sbomify.com/CVE-2021-36740/index.md)","id":"CVE-2021-36740","markdown":"https://insights.sbomify.com/CVE-2021-36740/index.md","name":"CVE-2021-36740","record":{"aliases":["ALPINE-CVE-2021-36740","BIT-varnish-2021-36740","DEBIAN-CVE-2021-36740","GHSA-8vxj-gx32-j925","MGASA-2021-0387","OESA-2021-1374","RHSA-2021:2988","RHSA-2021:2993","RLSA-2021:2988","UBUNTU-CVE-2021-36740"],"analysis":null,"analysis_generated_by":null,"assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"varnish_cache","vendor":"varnish-cache"},{"product":"varnish_cache","vendor":"varnish-software"},{"product":"varnish_cache","vendor":"varnish_cache_project"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.","ecosystems":["Bitnami","Red Hat:enterprise_linux:8::appstream","Red Hat:rhel_eus:8.1::appstream","Red Hat:rhel_eus:8.2::appstream","Red Hat:rhel_software_collections:3::el7","Rocky Linux:8"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request.","id":"CVE-2021-36740","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora"],"type":null,"year":"2021"},"n_packages":27,"n_references":7,"next":{"headline":"Trend Micro Multiple Products Improper Input Validation","id":"CVE-2021-36741"},"packages":[{"ecosystem":"Bitnami","fixed":["5.2.2","6.6.1"],"introduced":["5.0.0","6.1.0"],"last_affected":[],"package":"varnish","purl":"pkg:bitnami/varnish","source":"BIT-varnish-2021-36740"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:6.0.6-2.module+el8.4.0+11921+1a6539fc.1"],"introduced":["0"],"last_affected":[],"package":"varnish","purl":"pkg:rpm/redhat/varnish","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:6.0.6-2.module+el8.4.0+11921+1a6539fc.1"],"introduced":["0"],"last_affected":[],"package":"varnish-devel","purl":"pkg:rpm/redhat/varnish-devel","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:6.0.6-2.module+el8.4.0+11921+1a6539fc.1"],"introduced":["0"],"last_affected":[],"package":"varnish-docs","purl":"pkg:rpm/redhat/varnish-docs","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.15.0-5.module+el8.3.0+6843+b3b42fcc"],"introduced":["0"],"last_affected":[],"package":"varnish-modules","purl":"pkg:rpm/redhat/varnish-modules","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.15.0-5.module+el8.3.0+6843+b3b42fcc"],"introduced":["0"],"last_affected":[],"package":"varnish-modules-debuginfo","purl":"pkg:rpm/redhat/varnish-modules-debuginfo","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:0.15.0-5.module+el8.3.0+6843+b3b42fcc"],"introduced":["0"],"last_affected":[],"package":"varnish-modules-debugsource","purl":"pkg:rpm/redhat/varnish-modules-debugsource","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.1::appstream","fixed":["0:6.0.2-2.module+el8.1.0+11974+ea5ba4f1"],"introduced":["0"],"last_affected":[],"package":"varnish","purl":"pkg:rpm/redhat/varnish","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.1::appstream","fixed":["0:6.0.2-2.module+el8.1.0+11974+ea5ba4f1"],"introduced":["0"],"last_affected":[],"package":"varnish-devel","purl":"pkg:rpm/redhat/varnish-devel","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.1::appstream","fixed":["0:6.0.2-2.module+el8.1.0+11974+ea5ba4f1"],"introduced":["0"],"last_affected":[],"package":"varnish-docs","purl":"pkg:rpm/redhat/varnish-docs","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.1::appstream","fixed":["0:0.15.0-4.module+el8+2481+4078e9d2"],"introduced":["0"],"last_affected":[],"package":"varnish-modules","purl":"pkg:rpm/redhat/varnish-modules","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.1::appstream","fixed":["0:0.15.0-4.module+el8+2481+4078e9d2"],"introduced":["0"],"last_affected":[],"package":"varnish-modules-debuginfo","purl":"pkg:rpm/redhat/varnish-modules-debuginfo","source":"RHSA-2021:2988"},{"ecosystem":"Red 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Hat:rhel_eus:8.2::appstream","fixed":["0:0.15.0-4.module+el8+2481+4078e9d2"],"introduced":["0"],"last_affected":[],"package":"varnish-modules","purl":"pkg:rpm/redhat/varnish-modules","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.2::appstream","fixed":["0:0.15.0-4.module+el8+2481+4078e9d2"],"introduced":["0"],"last_affected":[],"package":"varnish-modules-debuginfo","purl":"pkg:rpm/redhat/varnish-modules-debuginfo","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_eus:8.2::appstream","fixed":["0:0.15.0-4.module+el8+2481+4078e9d2"],"introduced":["0"],"last_affected":[],"package":"varnish-modules-debugsource","purl":"pkg:rpm/redhat/varnish-modules-debugsource","source":"RHSA-2021:2988"},{"ecosystem":"Red Hat:rhel_software_collections:3::el7","fixed":["0:6.0.8-2.el7"],"introduced":["0"],"last_affected":[],"package":"rh-varnish6-varnish","purl":"pkg:rpm/redhat/rh-varnish6-varnish","source":"RHSA-2021:2993"},{"ecosystem":"Red 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Hat:rhel_software_collections:3::el7","fixed":["0:0.15.0-7.el7"],"introduced":["0"],"last_affected":[],"package":"rh-varnish6-varnish-modules-debuginfo","purl":"pkg:rpm/redhat/rh-varnish6-varnish-modules-debuginfo","source":"RHSA-2021:2993"},{"ecosystem":"Rocky Linux:8","fixed":["0:6.0.6-2.module+el8.3.0+179+20b582cc"],"introduced":["0"],"last_affected":[],"package":"varnish","purl":"pkg:rpm/rocky-linux/varnish?distro=rocky-linux-8-4-legacy\u0026epoch=0","source":"RLSA-2021:2988"},{"ecosystem":"Rocky Linux:8","fixed":["0:0.15.0-5.module+el8.3.0+179+20b582cc"],"introduced":["0"],"last_affected":[],"package":"varnish-modules","purl":"pkg:rpm/rocky-linux/varnish-modules?distro=rocky-linux-8-4-legacy\u0026epoch=0","source":"RLSA-2021:2988"}],"prev":{"headline":"XSS vulnerability in the MVCBean JSP portlet maven archetype","id":"CVE-2021-36739"},"products":["n/a"],"published":"2021-07-14","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2021-36740/"}