{"answers":{"affected":"4 open source packages ship an affected version, including actionpack. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-22902 in the wild and no public exploit code.","fix":"Upgrade actionpack to a fixed version for your release line: 6.0.3.7 or 6.1.3.2.","what":"CVE-2021-22902 is a high-severity denial of service vulnerability in Rubyonrails Rails, published on 11 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-22902 and fix it if it is affected.\n\nWhat it is: CVE-2021-22902 is a high-severity denial of service vulnerability in Rubyonrails Rails, published on 11 Jun 2021. 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-2021-22902 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- actionpack (RubyGems): affected from 6.0.0; fixed in 6.0.3.7\n- actionpack (RubyGems): affected from 6.0.0; fixed in 6.0.3.7\n- actionpack (RubyGems): affected from 6.1.0; fixed in 6.1.3.2\n- actionpack (RubyGems): affected from 6.1.0; fixed in 6.1.3.2\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-2021-22902/ (Markdown: https://insights.sbomify.com/CVE-2021-22902/index.md)","id":"CVE-2021-22902","markdown":"https://insights.sbomify.com/CVE-2021-22902/index.md","name":"CVE-2021-22902","record":{"aliases":["DEBIAN-CVE-2021-22902","GHSA-g8ww-46x2-2p65","UBUNTU-CVE-2021-22902"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby on Rails","requires_auth":"none","summary":"Attackers can cause denial of service in Ruby on Rails applications by sending crafted Accept headers that trigger catastrophic backtracking in the MIME type parser.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"rails","vendor":"rubyonrails"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"The actionpack ruby gem (a framework for handling and responding to web requests in Rails) before 6.0.3.7, 6.1.3.2 suffers from a possible denial of service vulnerability in the Mime type parser of Action Dispatch. Carefully crafted Accept headers can cause the mime type parser in Action Dispatch to do catastrophic backtracking in the regular expression engine.","ecosystems":["RubyGems"],"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":"Denial of Service in Action Dispatch","id":"CVE-2021-22902","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":"rubyonrails:rails","products":["rubyonrails:rails"],"type":"denial_of_service","year":"2021"},"n_packages":4,"n_references":2,"next":{"headline":"Possible Open Redirect Vulnerability in Action Pack","id":"CVE-2021-22903"},"packages":[{"ecosystem":"RubyGems","fixed":["6.0.3.7"],"introduced":["6.0.0"],"last_affected":[],"package":"actionpack","purl":null,"source":"GHSA-g8ww-46x2-2p65"},{"ecosystem":"RubyGems","fixed":["6.0.3.7"],"introduced":["6.0.0"],"last_affected":[],"package":"actionpack","purl":"pkg:gem/actionpack","source":"GHSA-g8ww-46x2-2p65"},{"ecosystem":"RubyGems","fixed":["6.1.3.2"],"introduced":["6.1.0"],"last_affected":[],"package":"actionpack","purl":null,"source":"GHSA-g8ww-46x2-2p65"},{"ecosystem":"RubyGems","fixed":["6.1.3.2"],"introduced":["6.1.0"],"last_affected":[],"package":"actionpack","purl":"pkg:gem/actionpack","source":"GHSA-g8ww-46x2-2p65"}],"prev":{"headline":"curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session t","id":"CVE-2021-22901"},"products":["https://github.com/rails/rails"],"published":"2021-06-11","related":[{"cvss_score":10,"headline":"Active Record contains deserialization of arbitrary YAML","id":"CVE-2013-0277","kev_date_added":null,"published":"2013-02-13"},{"cvss_score":8.1,"headline":"SQL injection in n/a","id":"CVE-2017-17916","kev_date_added":null,"published":"2017-12-29"},{"cvss_score":8.1,"headline":"SQL injection in n/a","id":"CVE-2017-17917","kev_date_added":null,"published":"2017-12-29"},{"cvss_score":8,"headline":"Rails Active Storage has possible Path Traversal in DiskService","id":"CVE-2026-33195","kev_date_added":null,"published":"2026-03-23"},{"cvss_score":7.5,"headline":"Rails possible ReDoS vulnerability in Accept header parsing in Action Dispatch","id":"CVE-2024-26142","kev_date_added":null,"published":"2024-02-27"},{"cvss_score":7.5,"headline":"ReDoS based DoS vulnerability in Action Dispatch","id":"CVE-2023-22792","kev_date_added":null,"published":"2023-02-09"}],"sources":[{"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":"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":"2024-08-03","vendors":["n/a"]},"summary":"Attackers can cause denial of service in Ruby on Rails applications by sending crafted Accept headers that trigger catastrophic backtracking in the MIME type parser.","url":"https://insights.sbomify.com/CVE-2021-22902/"}