A critical vulnerability (CVE-2026-57834) has been identified in Apache Traffic Server, allowing request smuggling through improperly handled malformed chunked transfer-encoded messages. This flaw impacts versions 8.0.0-8.1.9, 9.0.0-9.2.14, and 10.0.0-10.1.3. Successful exploitation could enable attackers to bypass proxy restrictions, conduct cache poisoning, or perform cross-site request forgery attacks. The vulnerability carries a CVSS score of 10.0, indicating severe risk. All users of affected versions are strongly advised to upgrade to 9.2.15 or 10.1.4, which contain patches for this issue. Immediate remediation is critical to prevent potential exploitation via crafted HTTP requests. No workarounds are available for this high-severity flaw, which affects widely deployed proxy and caching infrastructure.