{"answers":{"affected":"3 open source packages ship an affected version, including gunicorn. It affects 2 products.","exploited":"There is no known exploitation of CVE-2018-1000164 in the wild and no public exploit code.","fix":"Upgrade gunicorn to 19.5.0 or later.","what":"CVE-2018-1000164 is a high-severity vulnerability in Debian Debian Linux, published on 18 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-1000164 and fix it if it is affected.\n\nWhat it is: CVE-2018-1000164 is a high-severity vulnerability in Debian Debian Linux, published on 18 Apr 2018. 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-2018-1000164 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- gunicorn (PyPI): affected all versions; fixed in 19.5.0\n- gunicorn (PyPI): affected all versions; fixed in 19.5.0\n- gunicorn (PyPI): affected all versions; fixed in 19.5.0\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-2018-1000164/ (Markdown: https://insights.sbomify.com/CVE-2018-1000164/index.md)","id":"CVE-2018-1000164","markdown":"https://insights.sbomify.com/CVE-2018-1000164/index.md","name":"CVE-2018-1000164","record":{"aliases":["DEBIAN-CVE-2018-1000164","DLA-1357-1","DSA-4186-1","GHSA-32pc-xphx-q4f6","PYSEC-2018-55","UBUNTU-CVE-2018-1000164","USN-4022-1"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Python WSGI HTTP Server","requires_auth":"none","summary":"An attacker can inject arbitrary HTTP headers via CRLF sequences in gunicorn, potentially leading to cache poisoning or security bypasses.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"gunicorn","vendor":"gunicorn"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"}],"description":"gunicorn version 19.4.5 contains a CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers vulnerability in \"process_headers\" function in \"gunicorn/http/wsgi.py\" that can result in an attacker causing the server to return arbitrary HTTP headers. This vulnerability appears to have been fixed in 19.5.0.","ecosystems":["PyPI"],"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":"Gunicorn contains Improper Neutralization of CRLF sequences in HTTP headers","id":"CVE-2018-1000164","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"debian:debian_linux","products":["debian:debian_linux"],"type":"other","year":"2018"},"n_packages":3,"n_references":5,"next":{"headline":"LightSAML Incorrect Access Control vulnerability","id":"CVE-2018-1000165"},"packages":[{"ecosystem":"PyPI","fixed":["19.5.0"],"introduced":["0"],"last_affected":[],"package":"gunicorn","purl":null,"source":"GHSA-32pc-xphx-q4f6"},{"ecosystem":"PyPI","fixed":["19.5.0"],"introduced":["0"],"last_affected":[],"package":"gunicorn","purl":"pkg:pypi/gunicorn","source":"GHSA-32pc-xphx-q4f6"},{"ecosystem":"PyPI","fixed":["19.5.0"],"introduced":["0"],"last_affected":[],"package":"gunicorn","purl":"pkg:pypi/gunicorn","source":"PYSEC-2018-55"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-1000163"},"products":["n/a"],"published":"2018-04-18","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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"2024-08-05","vendors":["n/a"]},"summary":"An attacker can inject arbitrary HTTP headers via CRLF sequences in gunicorn, potentially leading to cache poisoning or security bypasses.","url":"https://insights.sbomify.com/CVE-2018-1000164/"}