CVE-2026-101080 in AI-Infra-Guard
Summary
by MITRE • 09/28/2026
A vulnerability was identified in Tencent AI-Infra-Guard up to 4.5.2/4.6.2. This affects the function startsWith of the file skill_scan/tools/dir/dir_actions.py of the component File Access. The manipulation leads to path traversal. The attack needs to be performed locally. The exploit is publicly available and might be used. Upgrading to version 4.6.0 is able to mitigate this issue. The identifier of the patch is ac0384edc9dbea3b226edefcf50613bd8509134f. You should upgrade the affected component.
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Analysis
by VulDB Data Team • 09/28/2026
A critical security flaw has been identified within Tencent AI-Infra-Guard, specifically affecting versions up to 4.5.2 and 4.6.2 in its File Access component. The vulnerability resides in the startsWith function located within the file skill_scan/tools/dir/dir_actions.py. This implementation error allows for path traversal attacks, which represent a significant risk to system integrity by enabling unauthorized access to files outside of intended directories. Path traversal vulnerabilities are classified under CWE-22 and typically occur when an application fails to properly sanitize user-supplied input that is used as part of file or directory operations. In this specific instance, the logic governing how paths are validated before being processed appears insufficient, allowing attackers to manipulate relative path sequences such as dot-dot-slash characters to escape the current working directory context.
The operational impact of this vulnerability centers on the potential for local privilege escalation and unauthorized data exposure. Because the attack vector requires local execution, an attacker must already have some level of access to the system where Tencent AI-Infra-Guard is deployed. Once inside, the ability to traverse directories can lead to reading sensitive configuration files, accessing proprietary codebases, or potentially modifying critical system resources depending on the permissions under which the application runs. The presence of a publicly available exploit significantly lowers the barrier for entry, meaning that any local user with basic technical knowledge could leverage this flaw without needing complex custom tooling. This increases the likelihood of successful exploitation in environments where internal threat actors or compromised accounts are present.
From an offensive security perspective, this vulnerability aligns with ATT&CK techniques related to Command and Scripting Interpreter abuse as well as File and Directory Discovery. Attackers often use path traversal to map out a system's structure before executing further malicious actions such as data exfiltration or lateral movement. The fact that the exploit is publicly available suggests that security researchers have already demonstrated the feasibility of this attack, making it imperative for organizations running these affected versions to treat this issue with high priority. Failure to address this flaw could result in a breach of confidentiality and integrity principles governed by standard information security frameworks.
Mitigation strategies focus primarily on immediate software updates rather than complex configuration changes. The vendor has released patches that resolve the underlying logic error within the startsWith function, ensuring that path inputs are correctly validated against allowed directories before processing occurs. Upgrading Tencent AI-Infra-Guard to version 4.6.0 or later is the recommended course of action to eliminate this vulnerability. Specifically, patch identifier ac0384edc9dbea3b226edefcf50613bd8509134f addresses the root cause by implementing stricter input validation and path normalization checks. Organizations should verify their current version immediately and apply the update to all affected instances within their infrastructure. Additionally, it is advisable to review access controls around the File Access component to ensure that even if similar vulnerabilities exist in other parts of the system, the principle of least privilege limits the potential damage from any successful exploitation attempt.