{"id":"ALPINE-CVE-2020-26137","details":"urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.","modified":"2025-12-03T22:49:16.399298Z","published":"2020-09-30T18:15:26.773Z","upstream":["CVE-2020-26137"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2020-26137"}],"affected":[{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/py3-urllib3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.25.9-r0"}]}],"versions":["1.18-r0","1.21.1-r0","1.22-r0","1.24.1-r0","1.24.1-r1","1.24.2-r0","1.25.1-r0","1.25.2-r0","1.25.3-r0","1.25.5-r0","1.25.6-r0","1.25.6-r1","1.25.7-r0","1.25.7-r1","1.25.8-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2020-26137.json"}},{"package":{"name":"py3-urllib3","ecosystem":"Alp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