Use-after-free in Apache Traffic Server - CVE-2026-58164
Published: August 24, 2026
Vulnerability identifier: #VU144779
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58164
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute code using freed memory or cause a denial of service.
The vulnerability exists due to use-after-free in remap config when handling remap configuration lifetime and time-of-check/time-of-use conditions. A remote attacker can trigger remap configuration handling to execute code using freed memory or cause a denial of service.
Affected software
Apache Traffic Server
Fedora
trafficserver
Fedora
trafficserver
How to mitigate CVE-2026-58164
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