{"answers":{"affected":"2 open source packages ship an affected version, including actionpack-page_caching. It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-8159 in the wild and no public exploit code.","fix":"Upgrade actionpack-page_caching to 1.2.1 or later.","what":"CVE-2020-8159 is a critical path traversal vulnerability in Debian Debian Linux, published on 12 May 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-8159 and fix it if it is affected.\n\nWhat it is: CVE-2020-8159 is a critical path traversal vulnerability in Debian Debian Linux, published on 12 May 2020. 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-2020-8159 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- actionpack-page_caching (RubyGems): affected all versions; fixed in 1.2.1\n- actionpack-page_caching (RubyGems): affected all versions; fixed in 1.2.1\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-2020-8159/ (Markdown: https://insights.sbomify.com/CVE-2020-8159/index.md)","id":"CVE-2020-8159","markdown":"https://insights.sbomify.com/CVE-2020-8159/index.md","name":"CVE-2020-8159","record":{"aliases":["DEBIAN-CVE-2020-8159","DLA-2719-1","GHSA-mg5p-95m9-rmfp","UBUNTU-CVE-2020-8159"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Ruby on Rails plugin","requires_auth":"none","summary":"An attacker can write arbitrary files to the web server via path traversal, potentially leading to remote code execution.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"actionpack_page-caching","vendor":"rubyonrails"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"There is a vulnerability in actionpack_page-caching gem \u003c v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.","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":"Arbitrary file write in actionpack-page_caching gem","id":"CVE-2020-8159","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"RubyGems","product":"debian:debian_linux","products":["debian:debian_linux"],"type":"path_traversal","year":"2020"},"n_packages":2,"n_references":2,"next":{"headline":"Cross-site scripting in MendixSSO","id":"CVE-2020-8160"},"packages":[{"ecosystem":"RubyGems","fixed":["1.2.1"],"introduced":["0"],"last_affected":[],"package":"actionpack-page_caching","purl":null,"source":"GHSA-mg5p-95m9-rmfp"},{"ecosystem":"RubyGems","fixed":["1.2.1"],"introduced":["0"],"last_affected":[],"package":"actionpack-page_caching","purl":"pkg:gem/actionpack-page_caching","source":"GHSA-mg5p-95m9-rmfp"}],"prev":{"headline":"TypeORM vulnerable to MAID and Prototype Pollution","id":"CVE-2020-8158"},"products":["https://github.com/rails/actionpack-page_caching"],"published":"2020-05-12","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":"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":"2024-08-04","vendors":["n/a"]},"summary":"An attacker can write arbitrary files to the web server via path traversal, potentially leading to remote code execution.","url":"https://insights.sbomify.com/CVE-2020-8159/"}