{"id":"OESA-2026-3658","summary":"python-gunicorn security update","details":"Gunicorn(Green Unicorn) is a Python WSGI HTTP Server for UNIX. It's a pre-fork worker model ported from Ruby's Unicorn_ project. The Gunicorn server is broadly compatible with various web frameworks, simply implemented, light on server resource usage, and fairly speedy.\r\n\r\nSecurity Fix(es):\n\nGunicorn fails to properly validate Transfer-Encoding headers, leading to HTTP Request Smuggling (HRS) vulnerabilities. By crafting requests with conflicting Transfer-Encoding headers, attackers can bypass security restrictions and access restricted endpoints. This issue is due to Gunicorn's handling of Transfer-Encoding headers, where it incorrectly processes requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified. This vulnerability allows for a range of attacks including cache poisoning, session manipulation, and data exposure.(CVE-2024-1135)","modified":"2026-09-05T15:16:34.059979592Z","published":"2026-09-05T15:03:35Z","upstream":["CVE-2024-1135"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3658"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-1135"}],"affected":[{"package":{"name":"python-gunicorn","ecosystem":"openEuler:24.03-LTS-SP4","purl":"pkg:rpm/openEuler/python-gunicorn&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"21.2.0-3.oe2403sp4"}]}],"ecosystem_specific":{"noarch":["python-gunicorn-help-21.2.0-3.oe2403sp4.noarch.rpm","python3-gunicorn-21.2.0-3.oe2403sp4.noarch.rpm"],"src":["python-gunicorn-21.2.0-3.oe2403sp4.src.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-3658.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}