CVE-2017-5660

There is a vulnerability in Apache Traffic Server (ATS) 6.2.0 and prior and 7.0.0 and prior with...

8.6 HighFix available

There is a vulnerability in Apache Traffic Server (ATS) 6.2.0 and prior and 7.0.0 and prior with the Host header and line folding. This can have issues when interacting with upstream proxies and the wrong host being used.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

1.93%Up 0.1 points since Apr 14, 2021

What each source reports

NVD Score used 8.6

Record: CVE-2017-5660
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

Record: CVE-2017-5660
Updated: 2026-11-02

EUVDEUVD-2017-14740 No score

Record: EUVD-2017-14740
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6qxx-fh8v-m9jv 8.6

There is a vulnerability in Apache Traffic Server (ATS) 6.2.0 and prior and 7.0.0 and prior with...

Record: GHSA-6qxx-fh8v-m9jv
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness: CWE-20
Updated: 2026-11-02

OSV 8.6

Record: CVE-2017-5660
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2017-5660 8.6

Record: DEBIAN-CVE-2017-5660
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2017-5660 8.6

Record: UBUNTU-CVE-2017-5660
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`trafficserver` Debian:12	before 7.1.2+ds-1	7.1.2+ds-1
`trafficserver` Debian:9 From an advisory covering 2 CVEs	before 7.0.0-6+deb9u1, plus listed versions 7.0.0-5	7.0.0-6+deb9u1
`trafficserver` Ubuntu:16.04:LTS	All versions, plus listed versions 5.3.0-2ubuntu15.3.0-2ubuntu2	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-5660 is a high vulnerability (CVSS 8.6) in Apache Traffic Server, published February 27, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.93%, the 80th percentile. Fixed in trafficserver 7.1.2+ds-1.