CVE-2026-58182 in Traffic Server
Summary
by MITRE • 07/29/2026
The Apache Traffic Server ts_lua plugin mishandles initialization, transform context, and per-instance state.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
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Analysis
by VulDB Data Team • 07/29/2026
The Apache Traffic Server ts_lua plugin vulnerability represents a critical flaw in the software's handling of initialization sequences and state management within its lua scripting environment. This issue manifests across multiple version ranges including 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3, indicating a persistent problem that spans several major releases of the traffic server software. The vulnerability specifically targets the plugin's ability to properly manage transform contexts and per-instance state information during the initialization phase of lua script execution.
The technical flaw stems from improper handling of resource allocation and context management within the ts_lua plugin architecture. When the plugin initializes, it fails to correctly establish or maintain the necessary state information required for proper operation of lua scripts. This malfunction occurs during both the initial setup phase and subsequent transformation operations, creating potential points of failure that could be exploited by malicious actors. The improper state handling can lead to memory corruption, unexpected behavior in script execution, and potentially unauthorized access to system resources.
From an operational perspective, this vulnerability poses significant risks to organizations relying on Apache Traffic Server for content delivery and caching services. Attackers could potentially exploit the flawed initialization sequences to cause denial of service conditions, manipulate cached content, or gain unauthorized access to sensitive data flowing through the traffic server. The impact extends beyond simple functionality degradation as the state management issues could lead to unpredictable behavior in production environments where the traffic server handles critical web traffic.
The mitigation strategy involves immediate upgrading to version 9.2.15 or 10.1.4, which contain the necessary patches to address the initialization and state management issues within the ts_lua plugin. Organizations should conduct thorough testing of their existing lua scripts and configurations after applying the updates to ensure compatibility and proper operation. Security teams should also implement monitoring procedures to detect any unusual behavior patterns that might indicate exploitation attempts targeting this vulnerability.
This vulnerability aligns with CWE-362, which describes concurrent execution using shared resource vulnerabilities, as the improper state management can lead to race conditions during plugin initialization. Additionally, it maps to ATT&CK technique T1059.007 for scripting languages and T1484.001 for trusted relationship abuse, particularly when considering how the flaw might be leveraged to execute unauthorized code or manipulate system behavior through the lua plugin interface. The remediation process should include comprehensive security assessments of all traffic server configurations to identify potential exploitation vectors that may have been previously overlooked due to the underlying state management issues.