CVE-2019-17559
Apache Traffic Server vulnerability analysis and mitigation

Overview

A vulnerability (CVE-2019-17559) was identified in Apache Traffic Server versions 6.0.0 to 6.2.3, 7.0.0 to 7.1.8, and 8.0.0 to 8.0.5, related to smuggling attacks and scheme parsing (NVD).

Technical details

The vulnerability has been assigned a CVSS v3.1 base score of 9.8 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a critical severity level with potential for high impact across confidentiality, integrity, and availability (NVD).

Impact

The vulnerability could potentially lead to request smuggling attacks, affecting the security of the Apache Traffic Server installations (Debian Advisory).

Mitigation and workarounds

Users are advised to upgrade to Apache Traffic Server versions 7.1.9 and 8.0.6 or later versions to address this vulnerability (NVD).

Additional resources


SourceThis report was generated using AI

Related Apache Traffic Server vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-59173HIGH7.5
  • Apache Traffic Server logoApache Traffic Server
  • trafficserver
NoYesJul 18, 2026
CVE-2025-65114HIGH7.5
  • Apache Traffic Server logoApache Traffic Server
  • cpe:2.3:a:apache:traffic_server
NoYesApr 02, 2026
CVE-2025-58136HIGH7.5
  • Apache Traffic Server logoApache Traffic Server
  • trafficserver-debuginfo
NoYesApr 02, 2026
CVE-2025-49763HIGH7.5
  • Apache Traffic Server logoApache Traffic Server
  • trafficserver-debugsource
NoYesJun 19, 2025
CVE-2025-31698HIGH7.5
  • Apache Traffic Server logoApache Traffic Server
  • trafficserver
NoYesJun 19, 2025

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