Apache Traffic Server Regex Plugin Stack and Integer Overflow

CVE-2026-58179 is a stack and integer overflow vulnerability in Apache Traffic Server's regex_remap plugin that allows attackers to overflow memory through malicious substitution input. With a CVSS score of 8.1, this vulnerability poses a significant risk to organizations running affected versions (8.0.0-8.1.9, 9.0.0-9.2.14, 10.0.0-10.1.3) of Apache Traffic Server. The vulnerability enables memory corruption that could lead to code execution, denial of service, or information disclosure. Any deployment using the regex_remap plugin for URL rewriting is at risk, making this particularly concerning for web infrastructure, CDNs, and reverse proxy implementations relying on this widely-used component.

While this CVE does not currently map to specific MITRE ATT&CK techniques, Casky's security skills framework—powered by Claude AI with extended reasoning—would identify the underlying attack patterns associated with memory corruption exploits. Security practitioners using Casky would observe findings related to memory safety violations, input validation bypass, and potential code execution chains. Although zero matching skills are indexed for this specific vulnerability at present, Casky's continuous skill mapping would help practitioners understand the exploitation prerequisites: adversaries would need to craft malicious regex patterns targeting the substitution parser, monitor for crashes or unexpected behavior indicating successful memory corruption, and recognize this as a precursor to privilege escalation or lateral movement. Immediate patching to versions 9.2.15 or 10.1.4 is critical to prevent exploitation.