Stack-based buffer overflow in Apache Traffic Server - CVE-2026-58179
Published: August 24, 2026
Vulnerability identifier: #VU144777
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58179
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service or execute arbitrary code.
The vulnerability exists due to stack-based buffer overflow in plugin: regex_remap when processing substitution input. A remote attacker can send crafted substitution input to cause a denial of service or execute arbitrary code.
The advisory also mentions integer overflow conditions.
Affected software
Apache Traffic Server
Fedora
trafficserver
Fedora
trafficserver
How to mitigate CVE-2026-58179
Install security update from vendor's website.
Apache Traffic Server - addressed in versions 9.2.14, 10.1.3
trafficserver - addressed in versions 9.2.15-1.el8, 9.2.15-1.el9, 10.1.4-1.fc43, 10.1.4-1.fc44, 10.2.0-1.fc43, 10.2.0-1.fc44
trafficserver - addressed in versions 9.2.15-1.el8, 9.2.15-1.el9, 10.1.4-1.fc43, 10.1.4-1.fc44, 10.2.0-1.fc43, 10.2.0-1.fc44