What is CVE-2017-5659?

CVE-2017-5659 is a high-severity vulnerability in Apache Traffic Server, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-04-17.

How severe is CVE-2017-5659?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Apache Traffic Server

CVE-2017-5659

Apache Traffic Server before 6.2.1 generates a coredump when there is a mismatch between content length and chunked encoding.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2017-04-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.030 (86.8th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000

Affected products

Apache Traffic Server
Apache Software Foundation Traffic Server — versions All versions prior to version 6.2.1

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

issues.apache.org/jira/browse/TS-4819 (Patch, Third Party Advisory, Issue Tracking)
www.securityfocus.com/bid/97949 (vdb-entry)
www.securitytracker.com/id/1038275 (vdb-entry)

Frequently asked questions

What is CVE-2017-5659?: CVE-2017-5659 is a high-severity vulnerability in Apache Traffic Server, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-04-17.
How severe is CVE-2017-5659?: High severity. CVSS v3 base score is 7.5 out of 10.