{"id":"PSF-2016-8","summary":"HTTP header injection","details":"CRLF injection vulnerability in the HTTPConnection.putheader function in urllib2 and urllib in CPython (aka Python) before 2.7.10 and 3.x before 3.4.4 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in a URL.","aliases":["CVE-2016-5699"],"modified":"2026-05-18T05:45:53.816809204Z","published":"2016-09-02T14:00:00Z","database_specific":{"cwe_ids":[]},"references":[{"type":"REPORT","url":"https://bugs.python.org/issue22928"},{"type":"WEB","url":"http://blog.blindspotsecurity.com/2016/06/advisory-http-header-injection-in.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"59bdf6392de446de8a19bfa37cee52981612830e"},{"fixed":"8e88f6b5e2a35ee458c161aa3f2b7f1f17fb45d1"},{"fixed":"a112a8ae47813f75aa8ad27ee8c42a7c2e937d13"}]}],"versions":["v3.4.3","v3.4.3rc1","v2.7.9rc1","v3.3.6","v3.3.6rc1","v3.4.2rc1","v2.7.8","v3.4.1","v3.4.1rc1","v3.4.0","v3.4.0rc3","v3.3.5rc2","v3.4.0rc2","v3.4.0rc1","v3.4.0b3","v3.4.0b2","v3.4.0b1","v3.3.3rc1","v2.7.6rc1","v3.4.0a4","v3.4.0a3","v3.4.0a2","v3.4.0a1","v3.3.2","v2.7.5","v2.7.4rc1","v3.3.0","v3.3.0rc3","v3.3.0rc2","v3.3.0rc1","v3.3.0b2","v3.3.0b1","v3.3.0a4","v3.3.0a3","v3.3.0a2","v2.7.3rc1","v2.7.2rc1","v2.7","v3.2rc3","v3.2rc2","v3.2rc1","v3.2b2","v3.2b1","v2.7.1","v2.7.1rc1","v3.2a4","v3.2a3","v3.2a2","v3.2a1","v2.7rc2","v2.7rc1","v2.7b2","v2.7b1","v2.7a4","v2.7a3","v2.7a2","v2.7a1","v3.1","v3.1rc2","v3.1rc1","v3.1b1","v3.1a2","v3.1a1","v3.0rc3","v3.0rc2","v2.6","v2.6rc2","v3.0rc1","v2.6rc1","v3.0b3","v2.6b3","v2.6b2","v3.0b2","v2.6b1","v3.0b1","v2.6a3","v3.0a5","v2.6a2","v3.0a4","v3.0a3","v2.6a1","v3.0a2","v3.0a1","v2.5b3","v2.5b2","v2.5b1","v2.5a2","v2.5a1","v2.5a0","v2.4","v2.4c1","v2.4b2","v2.4b1","v2.4a3","v2.4a2","v2.4a1","v2.3c2","v2.3c1","v2.2a3","v2.1","v2.1c2","v2.1c1","v2.1b2","v2.1b1","v2.1a2","v2.1a1","v2.0","v2.0c1","v2.0b2","v2.0b1","v1.6a2","v1.6a1","v1.5.2","v1.5.2c1","v1.5.2b2","v1.5.2b1","v1.5.2a2","v1.5.2a1","v1.5.1","v1.5","v1.5b2","v1.5b1","v1.5a4","v1.5a3","v1.5a2","v1.5a1","v1.4","v1.4b3","v1.4b2","v1.4b1","v1.3","v1.3b1","v1.2","v1.2b4","v1.2b3","v1.2b2","v1.2b1","v1.1.1","v1.1","v1.0.2","v1.0.1","v0.9.9","v0.9.8"],"database_specific":{"source":"https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2016-8.json"}}],"schema_version":"1.7.5"}