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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-522-1 python2.7 security update
Debian DLA Debian DLA DLA-1663-1 python3.4 security update
Ubuntu USN Ubuntu USN USN-3134-1 Python vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

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:

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

cve-icon OpenCVE Enrichment

No data.