CVE catalog
CVE-2016-5699
UBUNTU-CVE-2016-5699
- Severity
- Medium · CVSS 6.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 9.89% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python2.7 | 11 | 2.7.10~rc1-1 | fixed |
| Ubuntu | python2.7 | 14.04 | 2.7.5-8ubuntu3 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.5-8ubuntu4 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-2 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-2ubuntu1 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-3 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-3ubuntu1 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-4 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-4ubuntu1 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-5 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-7 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-8 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-8ubuntu0.2 | vulnerable |
| Ubuntu | python2.7 | 14.04 | 2.7.6-8ubuntu0.3 | fixed |
| Ubuntu | python3.4 | 14.04 | 3.4~b1-0ubuntu3 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~b1-4ubuntu4 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~b1-4ubuntu6 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~b1-5ubuntu2 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~b2-1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~b3-1ubuntu1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~rc1-1build1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~rc2-1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4~rc3-0ubuntu1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.0-1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.0-2ubuntu1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.0-2ubuntu1.1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.3-1ubuntu1~14.04.1 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.3-1ubuntu1~14.04.3 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.3-1ubuntu1~14.04.4 | vulnerable |
| Ubuntu | python3.4 | 14.04 | 3.4.3-1ubuntu1~14.04.5 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python2.7 | deb | 11 | 2.7.10~rc1-1 | Not reported | DEBIAN-CVE-2016-5699 | Not reported |
| Ubuntu | python2.7 | deb | 14.04 | 2.7.6-8ubuntu0.3 | Not reported | UBUNTU-CVE-2016-5699 | Not reported |
| Ubuntu | python3.4 | deb | 14.04 | 3.4.3-1ubuntu1~14.04.5 | Not reported | UBUNTU-CVE-2016-5699 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2016_2270-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-5699]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-5699]
- [https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-5699.json]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]