{"answers":{"affected":"8 open source packages ship an affected version, including cgi, ruby and ruby-min. It affects 9 products.","exploited":"There is no known exploitation of CVE-2021-41819 in the wild and no public exploit code.","fix":"Upgrade cgi to a fixed version for your release line: 0.1.0.1, 0.2.1 or 0.3.1.","what":"CVE-2021-41819 is a high-severity vulnerability in Debian Debian Linux, published on 1 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-41819 and fix it if it is affected.\n\nWhat it is: CVE-2021-41819 is a high-severity vulnerability in Debian Debian Linux, published on 1 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-41819 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- cgi (RubyGems): affected all versions; fixed in 0.1.0.1\n- cgi (RubyGems): affected all versions; fixed in 0.1.0.1\n- cgi (RubyGems): affected from 0.2.0; fixed in 0.2.1\n- cgi (RubyGems): affected from 0.2.0; fixed in 0.2.1\n- cgi (RubyGems): affected from 0.3.0; fixed in 0.3.1\n- cgi (RubyGems): affected from 0.3.0; fixed in 0.3.1\n- ruby (Bitnami): affected all versions; fixed in 2.6.9, 2.7.5, 3.0.3\n- ruby-min (Bitnami): affected all versions; fixed in 2.6.9, 2.7.5, 3.0.3\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-2021-41819/ (Markdown: https://insights.sbomify.com/CVE-2021-41819/index.md)","id":"CVE-2021-41819","markdown":"https://insights.sbomify.com/CVE-2021-41819/index.md","name":"CVE-2021-41819","record":{"aliases":["ALPINE-CVE-2021-41819","AZL-7126","BIT-ruby-2021-41819","BIT-ruby-min-2021-41819","CLEANSTART-2026-RI06659","CLSA-2024-1727115733","DEBIAN-CVE-2021-41819","GHSA-4vf4-qmvg-mh7h","JLSEC-2026-1288","OESA-2022-1497","SUSE-SU-2022:3292-1","UBUNTU-CVE-2021-41819"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby CGI library","requires_auth":"none","summary":"Attackers can bypass cookie security prefixes in Ruby's CGI library, potentially leading to cookie manipulation or session hijacking.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"factory","vendor":"opensuse"},{"product":"leap","vendor":"opensuse"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"software_collections","vendor":"redhat"},{"product":"cgi","vendor":"ruby-lang"},{"product":"ruby","vendor":"ruby-lang"},{"product":"linux_enterprise","vendor":"suse"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-565","name":"Reliance on Cookies without Validation and Integrity Checking"}],"description":"CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby.","ecosystems":["Bitnami","RubyGems","SUSE:Linux Enterprise Module for Basesystem 15 SP3","SUSE:Linux Enterprise Module for Basesystem 15 SP4","openSUSE:Leap 15.3","openSUSE:Leap 15.4"],"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":"Cookie Prefix Spoofing in CGI::Cookie.parse","id":"CVE-2021-41819","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora","opensuse:leap","redhat:enterprise_linux","redhat:software_collections","ruby-lang:ruby","suse:linux_enterprise"],"type":"security_feature_bypass","year":"2021"},"n_packages":12,"n_references":6,"next":{"headline":"Integer overflow in n/a","id":"CVE-2021-41821"},"packages":[{"ecosystem":"Bitnami","fixed":["2.6.9","2.7.5","3.0.3"],"introduced":["0","2.7.0","3.0.0"],"last_affected":[],"package":"ruby","purl":"pkg:bitnami/ruby","source":"BIT-ruby-2021-41819"},{"ecosystem":"Bitnami","fixed":["2.6.9","2.7.5","3.0.3"],"introduced":["0","2.7.0","3.0.0"],"last_affected":[],"package":"ruby-min","purl":"pkg:bitnami/ruby-min","source":"BIT-ruby-min-2021-41819"},{"ecosystem":"RubyGems","fixed":["0.1.0.1"],"introduced":["0"],"last_affected":[],"package":"cgi","purl":null,"source":"GHSA-4vf4-qmvg-mh7h"},{"ecosystem":"RubyGems","fixed":["0.1.0.1"],"introduced":["0"],"last_affected":[],"package":"cgi","purl":"pkg:gem/cgi","source":"GHSA-4vf4-qmvg-mh7h"},{"ecosystem":"RubyGems","fixed":["0.2.1"],"introduced":["0.2.0"],"last_affected":[],"package":"cgi","purl":null,"source":"GHSA-4vf4-qmvg-mh7h"},{"ecosystem":"RubyGems","fixed":["0.2.1"],"introduced":["0.2.0"],"last_affected":[],"package":"cgi","purl":"pkg:gem/cgi","source":"GHSA-4vf4-qmvg-mh7h"},{"ecosystem":"RubyGems","fixed":["0.3.1"],"introduced":["0.3.0"],"last_affected":[],"package":"cgi","purl":null,"source":"GHSA-4vf4-qmvg-mh7h"},{"ecosystem":"RubyGems","fixed":["0.3.1"],"introduced":["0.3.0"],"last_affected":[],"package":"cgi","purl":"pkg:gem/cgi","source":"GHSA-4vf4-qmvg-mh7h"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["2.5.9-150000.4.26.1"],"introduced":["0"],"last_affected":[],"package":"ruby2.5","purl":"pkg:rpm/suse/ruby2.5\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2022:3292-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP4","fixed":["2.5.9-150000.4.26.1"],"introduced":["0"],"last_affected":[],"package":"ruby2.5","purl":"pkg:rpm/suse/ruby2.5\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4","source":"SUSE-SU-2022:3292-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["2.5.9-150000.4.26.1"],"introduced":["0"],"last_affected":[],"package":"ruby2.5","purl":"pkg:rpm/opensuse/ruby2.5\u0026distro=openSUSE%20Leap%2015.3","source":"SUSE-SU-2022:3292-1"},{"ecosystem":"openSUSE:Leap 15.4","fixed":["2.5.9-150000.4.26.1"],"introduced":["0"],"last_affected":[],"package":"ruby2.5","purl":"pkg:rpm/opensuse/ruby2.5\u0026distro=openSUSE%20Leap%2015.4","source":"SUSE-SU-2022:3292-1"}],"prev":{"headline":"Regular expression denial of service vulnerability (ReDoS) in date","id":"CVE-2021-41817"},"products":["n/a"],"published":"2022-01-01","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":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-05-22","vendors":["n/a"]},"summary":"Attackers can bypass cookie security prefixes in Ruby's CGI library, potentially leading to cookie manipulation or session hijacking.","url":"https://insights.sbomify.com/CVE-2021-41819/"}