CVE-2026-71215 art-template CVE debrief

Who should care

Developers and administrators using art-template in their applications should be aware of this vulnerability. The vulnerability can be exploited if user input is used to influence sub-template names, allowing attackers to read arbitrary files on the system. Affected operators, platforms, and security teams should review and apply patches for art-template, restrict user input for sub-template names, and monitor file system access for Node process. Compensating controls for exposed systems should be reviewed while remediation is scheduled and verified. Relevant monitoring, detection, and logs for exposed assets should be checked. Exceptions, retested remediated assets, and closed items should be tracked only after evidence is documented. Asset inventory and rollback/change windows should also be considered for remediation planning and implementation. Vulnerability management and security teams should prioritize patching for this vulnerability due to its HIGH rating and CVSS score of 7.5. They should also consider compensating controls and monitoring for exposed systems while remediation is in progress. The vulnerability affects applications that use art-template and allow user input to influence sub-template names, making it a critical concern for developers and administrators. Security teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Tracking exceptions, retesting remediated assets, and closing the item only after evidence is documented is crucial for ensuring the vulnerability is properly addressed. The vulnerability's impact on the system and potential operational impact should be carefully evaluated to ensure effective remediation and mitigation strategies are implemented. Security teams should also verify that patches have been applied and that compensating controls are in place to prevent exploitation. They should monitor for any suspicious activity and review logs to detect potential attacks. By taking these steps, security teams can help prevent the exploitation of the

Technical summary

The art-template library has a vulnerability in its sub-template resolution logic. The src/compile/adapter/resolve-filename.js file does not properly check if a resolved file path remains within the root directory after using path.resolve(). This allows an attacker to read arbitrary files on disk accessible by the Node process if external input influences sub-template names. The vulnerability can be exploited if user input is used to influence sub-template names, allowing attackers to read arbitrary files on the system.

Defensive priority

CVE-2026-71215 is rated HIGH with a CVSS score of 7.5. Consider prioritizing patching for this vulnerability.

Recommended defensive actions

• Review and apply patches for art-template
• Restrict user input for sub-template names
• Monitor file system access for Node process
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE description indicates that art-template's sub-template resolution logic is vulnerable to arbitrary file reads. The vulnerability exists in the src/compile/adapter/resolve-filename.js file and is used by both the include() and extend() template directives. The issue allows an attacker to read arbitrary files on disk that the Node process can access if a sub-template name is influenced by external input.

Official resources