{"schema_version":"1.7.2","id":"OESA-2026-4503","modified":"2026-10-22T14:35:54Z","published":"2026-10-22T14:35:54Z","upstream":["CVE-2026-97689"],"summary":"python-urllib3 security update","details":"Sanity-friendly HTTP client for Python\r\n\r\nSecurity Fix(es):\n\nurllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a malicious server returns Transfer-Encoding: chunked followed by a very long run of bytes without a newline. The attack mechanism is that a malicious HTTP server sends a very long unterminated chunk-size line. The impact is that unbounded memory allocation can exhaust the client process. This issue is fixed in version 2.8.0.(CVE-2026-97689)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP4","name":"python-urllib3","purl":"pkg:rpm/openEuler/python-urllib3&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.26.18-10.oe2403sp4"}]}],"ecosystem_specific":{"noarch":["python3-urllib3-1.26.18-10.oe2403sp4.noarch.rpm"],"src":["python-urllib3-1.26.18-10.oe2403sp4.src.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4503"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97689"}],"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}],"database_specific":{"severity":"High"}}