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.
History

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.10221}

epss

{'score': 0.24971}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2016-09-02T14:00:00

Updated: 2024-08-06T01:07:59.909Z

Reserved: 2016-06-16T00:00:00

Link: CVE-2016-5699

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2016-09-02T14:59:07.003

Modified: 2025-04-12T10:46:40.837

Link: CVE-2016-5699

cve-icon Redhat

Severity : Moderate

Publid Date: 2014-11-24T00:00:00Z

Links: CVE-2016-5699 - Bugzilla