{"answers":{"affected":"5 open source packages ship an affected version, including urllib3. It affects 3 products.","exploited":"There is no known exploitation of CVE-2023-43804 in the wild and no public exploit code.","fix":"Upgrade urllib3 to a fixed version for your release line: 1.26.17 or 2.0.6.","what":"CVE-2023-43804 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Oct 2023. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-43804 and fix it if it is affected.\n\nWhat it is: CVE-2023-43804 is a medium-severity vulnerability in Debian Debian Linux, published on 4 Oct 2023. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-43804 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- urllib3 (PyPI): affected all versions; fixed in 1.26.17\n- urllib3 (PyPI): affected all versions; fixed in 1.26.17\n- urllib3 (PyPI): affected from 2.0.0; fixed in 2.0.6, 1.26.17\n- urllib3 (PyPI): affected from 2.0.0; fixed in 2.0.6\n- urllib3 (PyPI): affected from 2.0.0; fixed in 2.0.6\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-2023-43804/ (Markdown: https://insights.sbomify.com/CVE-2023-43804/index.md)","id":"CVE-2023-43804","markdown":"https://insights.sbomify.com/CVE-2023-43804/index.md","name":"CVE-2023-43804","record":{"aliases":["ALPINE-CVE-2023-43804","ALSA-2024:2159","ALSA-2024:2986","AZL-31108","AZL-35444","AZL-59696","BELL-CVE-2023-43804","CLEANSTART-2026-FO12230","CLEANSTART-2026-II63303","CLSA-2025-1763032859","CLSA-2026-1769645563","DEBIAN-CVE-2023-43804","GHSA-v845-jxx5-vc9f","MINI-mfmc-w52h-cqm6","OESA-2023-1707","PYSEC-2023-192","RHSA-2024:0187","RHSA-2024:2159","RHSA-2024:2986","RLSA-2024:2986","ROOT-APP-PYPI-CVE-2023-43804","SUSE-SU-2023:4064-1","SUSE-SU-2023:4108-1","SUSE-SU-2023:4157-1","UBUNTU-CVE-2023-43804","openSUSE-SU-2024:13301-1","openSUSE-SU-2024:13302-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Python HTTP client library","requires_auth":"high_privilege","summary":"Attackers can steal cookies via cross-origin redirects if users manually set Cookie headers without disabling redirects in urllib3.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"urllib3","vendor":"python"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn't treat the `Cookie` HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a `Cookie` header and unknowingly leak information via HTTP redirects to a different origin if that user doesn't disable redirects explicitly. This issue has been patched in urllib3 version 1.26.17 or 2.0.5.","ecosystems":["AlmaLinux:8","AlmaLinux:9","PyPI","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:9::appstream","Red Hat:openstack:17.1::el8","Rocky Linux:8","SUSE:HPE Helion OpenStack 8","SUSE:Linux Enterprise Micro 5.1","SUSE:Linux Enterprise Micro 5.2","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP4","SUSE:Linux Enterprise Module for Basesystem 15 SP5","SUSE:Linux Enterprise Module for Public Cloud 12","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 12 SP5","SUSE:Linux Enterprise Software Development Kit 12 SP5","SUSE:Linux Enterprise Workstation Extension 12 SP5","SUSE:Manager Proxy 4.2","SUSE:Manager Server 4.2","SUSE:OpenStack Cloud 8","SUSE:OpenStack Cloud Crowbar 8","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":"2026-09-20","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-20T14:07:22Z","kind":"github_poc","ref":"https://github.com/deepanshu-khurana/CVE-2023-43804","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"`Cookie` HTTP header isn't stripped on cross-origin redirects","id":"CVE-2023-43804","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":"debian:debian_linux","products":["debian:debian_linux","fedoraproject:fedora"],"type":"information_disclosure","year":"2023"},"n_packages":30,"n_references":7,"next":{"headline":"Nexkey allows users to bypass authentication of Bull dashboard","id":"CVE-2023-43805"},"packages":[{"ecosystem":"PyPI","fixed":["1.26.17"],"introduced":["0"],"last_affected":[],"package":"urllib3","purl":null,"source":"GHSA-v845-jxx5-vc9f"},{"ecosystem":"PyPI","fixed":["1.26.17"],"introduced":["0"],"last_affected":[],"package":"urllib3","purl":"pkg:pypi/urllib3","source":"GHSA-v845-jxx5-vc9f"},{"ecosystem":"PyPI","fixed":["2.0.6","1.26.17"],"introduced":["2.0.0","0"],"last_affected":[],"package":"urllib3","purl":"pkg:pypi/urllib3","source":"PYSEC-2023-192"},{"ecosystem":"PyPI","fixed":["2.0.6"],"introduced":["2.0.0"],"last_affected":[],"package":"urllib3","purl":null,"source":"GHSA-v845-jxx5-vc9f"},{"ecosystem":"PyPI","fixed":["2.0.6"],"introduced":["2.0.0"],"last_affected":[],"package":"urllib3","purl":"pkg:pypi/urllib3","source":"GHSA-v845-jxx5-vc9f"},{"ecosystem":"AlmaLinux:8","fixed":["1.26.12-2.el8"],"introduced":["0"],"last_affected":[],"package":"python3.11-urllib3","purl":"pkg:rpm/almalinux/python3.11-urllib3","source":"ALSA-2024:2986"},{"ecosystem":"AlmaLinux:9","fixed":["1.26.12-2.el9"],"introduced":["0"],"last_affected":[],"package":"python3.11-urllib3","purl":"pkg:rpm/almalinux/python3.11-urllib3","source":"ALSA-2024:2159"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.26.12-2.el8"],"introduced":["0"],"last_affected":[],"package":"python3.11-urllib3","purl":"pkg:rpm/redhat/python3.11-urllib3","source":"RHSA-2024:2986"},{"ecosystem":"Red Hat:enterprise_linux:9::appstream","fixed":["0:1.26.12-2.el9"],"introduced":["0"],"last_affected":[],"package":"python3.11-urllib3","purl":"pkg:rpm/redhat/python3.11-urllib3","source":"RHSA-2024:2159"},{"ecosystem":"Red Hat:openstack:17.1::el8","fixed":["0:1.25.10-5.el8ost"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/redhat/python-urllib3","source":"RHSA-2024:0187"},{"ecosystem":"Red Hat:openstack:17.1::el8","fixed":["0:1.25.10-5.el8ost"],"introduced":["0"],"last_affected":[],"package":"python3-urllib3","purl":"pkg:rpm/redhat/python3-urllib3","source":"RHSA-2024:0187"},{"ecosystem":"Rocky Linux:8","fixed":["0:1.26.12-2.el8"],"introduced":["0"],"last_affected":[],"package":"python3.11-urllib3","purl":"pkg:rpm/rocky-linux/python3.11-urllib3?distro=rocky-linux-8-x86-64\u0026epoch=0","source":"RLSA-2024:2986"},{"ecosystem":"SUSE:HPE Helion OpenStack 8","fixed":["1.25.10-5.22.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=HPE%20Helion%20OpenStack%208","source":"SUSE-SU-2023:4157-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.1","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.1","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.2","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.2","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.4","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.4","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP4","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP5","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Public Cloud 12","fixed":["1.25.10-3.34.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012","source":"SUSE-SU-2023:4064-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["1.25.10-3.34.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2023:4064-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["1.25.10-3.34.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2023:4064-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP5","fixed":["1.25.10-3.34.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5","source":"SUSE-SU-2023:4064-1"},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 12 SP5","fixed":["1.25.10-3.34.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5","source":"SUSE-SU-2023:4064-1"},{"ecosystem":"SUSE:Manager Proxy 4.2","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Manager%20Proxy%204.2","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:Manager Server 4.2","fixed":["1.25.10-150300.4.6.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20Manager%20Server%204.2","source":"SUSE-SU-2023:4108-1"},{"ecosystem":"SUSE:OpenStack Cloud 8","fixed":["1.25.10-5.22.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20OpenStack%20Cloud%208","source":"SUSE-SU-2023:4157-1"},{"ecosystem":"SUSE:OpenStack Cloud Crowbar 8","fixed":["1.25.10-5.22.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/suse/python-urllib3\u0026distro=SUSE%20OpenStack%20Cloud%20Crowbar%208","source":"SUSE-SU-2023:4157-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["2.0.6-1.1"],"introduced":["0"],"last_affected":[],"package":"python-urllib3","purl":"pkg:rpm/opensuse/python-urllib3\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:13301-1"}],"prev":{"headline":"Path traversal in Arduino Create Agent","id":"CVE-2023-43803"},"products":["urllib3"],"published":"2023-10-04","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":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2025-11-03","vendors":["urllib3"]},"summary":"Attackers can steal cookies via cross-origin redirects if users manually set Cookie headers without disabling redirects in urllib3.","url":"https://insights.sbomify.com/CVE-2023-43804/"}