CVE-2026-58179 Apache Software Foundation CVE debrief

Who should care

Apache Traffic Server users and administrators should be aware of this vulnerability and take necessary actions to upgrade to a fixed version. The vulnerability has a high impact on the security of the affected system, and users should prioritize upgrading to a fixed version. The Apache Traffic Server project has provided official guidance on the affected versions and recommended upgrades. Users should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance. Users should also review compensating controls for exposed systems while remediation is scheduled and verified. Additionally, users should check relevant monitoring, detection, and logs for exposed assets that need extra review. Finally, users should track exceptions, retest remediated assets, and close the item only after evidence is documented. IT and security teams responsible for managing and securing Apache Traffic Server deployments should be aware of this vulnerability and take immediate action to mitigate the risk. This includes reviewing system configurations, assessing potential exposure, and applying the recommended patches or mitigations. Furthermore, security teams should update their vulnerability management processes to include this CVE and ensure that all affected systems are properly remediated and monitored for potential exploitation attempts. The operational impact of this vulnerability is significant, as a successful exploit could lead to arbitrary code execution, data breaches, or system compromise. Therefore, it is essential for affected organizations to prioritize the deployment of patches or mitigations to prevent potential attacks. The Apache Traffic Server community and users should also be aware of the potential risks associated with this vulnerability and take proactive measures to protect their systems and data. By staying informed and taking prompt action, users can minimize the risk of exploitation and ensure the security of their Apache Traffic Server deployments. Additionally, users should consider implementing compensating controls, such as monitoring and detection systems, to identify and respond to potential exploitationattempt

Technical summary

The Apache Traffic Server regex_remap plugin has a stack overflow and integer overflow vulnerability from substitution input. This issue affects Apache Traffic Server versions 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. The vulnerability has a CVSS score of 9.2 and is classified as CRITICAL. The vulnerability can be exploited by an attacker to execute arbitrary code on the affected system. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Defensive priority

Apache Traffic Server users should prioritize upgrading to a fixed version due to the critical severity of this vulnerability.

Recommended defensive actions

• Upgrade to version 9.2.15 or 10.1.4
• Review and apply vendor recommendations
• Monitor for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The Apache Traffic Server regex_remap plugin has a stack overflow and integer overflow vulnerability from substitution input. Affected versions include 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4. The vulnerability has a CVSS score of 9.2 and is classified as CRITICAL. Defenders should verify the affected versions in their environment and plan for an upgrade to a fixed version. The Apache Traffic Server project has provided official guidance on the affected versions and recommended upgrades.

Official resources