{"id":"CVE-2020-26137","state":"PUBLISHED","title":"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 put","description":"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.","publishedAt":"2020-09-29T00:00:00.000Z","updatedAt":"2024-08-04T15:49:07.138Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://bugs.python.org/issue39603","https://github.com/urllib3/urllib3/pull/1800","https://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436b","https://usn.ubuntu.com/4570-1/","https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html","https://www.oracle.com/security-alerts/cpuoct2021.html","https://www.oracle.com/security-alerts/cpujul2022.html","https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:08.370Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/26xxx/CVE-2020-26137.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-26137","state":"PUBLISHED","datePublished":"2020-09-29T00:00:00.000Z","dateUpdated":"2024-08-04T15:49:07.138Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2020-09-29T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://bugs.python.org/issue39603"},{"url":"https://github.com/urllib3/urllib3/pull/1800"},{"url":"https://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436b"},{"url":"https://usn.ubuntu.com/4570-1/","name":"USN-4570-1","tags":["vendor-advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html","name":"[debian-lts-announce] 20210615 [SECURITY] [DLA 2686-1] python-urllib3 security update","tags":["mailing-list"]},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html"},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html","name":"[debian-lts-announce] 20231008 [SECURITY] [DLA 3610-1] python-urllib3 security update","tags":["mailing-list"]}],"problemTypes":[{"descriptions":[{"type":"text","lang":"en","description":"n/a"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2023-10-08T13:06:22.131Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugs.python.org/issue39603","tags":["x_transferred"]},{"url":"https://github.com/urllib3/urllib3/pull/1800","tags":["x_transferred"]},{"url":"https://github.com/urllib3/urllib3/commit/1dd69c5c5982fae7c87a620d487c2ebf7a6b436b","tags":["x_transferred"]},{"url":"https://usn.ubuntu.com/4570-1/","name":"USN-4570-1","tags":["vendor-advisory","x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html","name":"[debian-lts-announce] 20210615 [SECURITY] [DLA 2686-1] python-urllib3 security update","tags":["mailing-list","x_transferred"]},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["x_transferred"]},{"url":"https://www.oracle.com/security-alerts/cpujul2022.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00012.html","name":"[debian-lts-announce] 20231008 [SECURITY] [DLA 3610-1] python-urllib3 security update","tags":["mailing-list","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T15:49:07.138Z"}}]}}}