CVE-2026-58188

Apache Software Foundation · Apache Traffic Server

Multiple experimental plugins in Apache Traffic Server contain memory-safety and limit-bypass errors that can be triggered by unauthenticated users.

Executive summary

Memory-safety and limit-bypass flaws in experimental Apache Traffic Server plugins present a high-severity risk of unauthorized access and system instability.

Vulnerability

The software suffers from out-of-bounds write vulnerabilities (CWE-787) within various experimental plugins. These flaws are accessible to unauthenticated attackers and can lead to memory corruption or the bypassing of configured limits.

Business impact

These vulnerabilities allow for both service disruption and potential security bypasses, which could be leveraged to gain unauthorized access to system resources. With a CVSS score of 8.2, this vulnerability is a high-priority risk that threatens the integrity and availability of the Traffic Server environment.

Remediation

Immediate Action: Update to the latest version of Apache Traffic Server to ensure all experimental plugins are patched.

Proactive Monitoring: Review plugin configurations and monitor for unexpected behaviors or errors in the logs related to experimental functionality.

Compensating Controls: Disable all unused or experimental plugins to reduce the attack surface and mitigate the risk of exploitation.

Exploitation status

Public Exploit Available: No

Analyst recommendation

Organizations should urgently apply vendor-supplied updates. Furthermore, it is recommended to review the necessity of experimental plugins and disable any that are not essential to maintain a hardened production environment.