Deserialization of Untrusted Data in Apache Traffic Server - CVE-2026-58163

 

Deserialization of Untrusted Data in Apache Traffic Server - CVE-2026-58163

Published: August 24, 2026


Vulnerability identifier: #VU144778
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58163
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to corrupt state or cause a denial of service.

The vulnerability exists due to improper deserialization and lifetime management in cache when handling on-disk cache fields and object lifetimes. A remote attacker can trigger cache processing to corrupt state or cause a denial of service.


Affected software

Apache Traffic Server
Fedora
trafficserver

How to mitigate CVE-2026-58163

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

External References

Related Security Bulletins