{"id":"ALPINE-CVE-2026-27171","details":"zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.","modified":"2026-08-27T22:17:57.097412463Z","published":"2026-02-18T04:16:01.263Z","upstream":["CVE-2026-27171"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2026-27171"}],"affected":[{"package":{"name":"zlib","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/zlib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.12"},{"fixed":"1.3.2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-27171.json"}},{"package":{"name":"zlib","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/zlib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.12"},{"fixed":"1.3.2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-27171.json"}},{"package":{"name":"zlib","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/zlib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.12"},{"fixed":"1.3.2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-27171.json"}},{"package":{"name":"zlib","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/zlib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.12"},{"fixed":"1.3.2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-27171.json"}},{"package":{"name":"zlib","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/zlib?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.2.12"},{"fixed":"1.3.2-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2026-27171.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}