CVE-2026-6540: Tigera Calico, обхождане на път

Описание

Оригинално описание

Calico's Application Layer Policy (disabled by default), which enforces HTTP rules through Dikastes, fails to perform URL path normalization. As a result, HTTP requests using path-traversal segments, encoded slashes, or repeated slashes are not correctly evaluated by Prefix path rules. Dikastes authorizes the request under the permitted prefix while the downstream workload or a fronting proxy normalizes the path and serves the restricted endpoint. An attacker with network access and no special RBAC can potentially reach HTTP endpoints the policy was intended to restrict.

Засегнати продукти

• Tigera Calico: преди 3.31.6
• Tigera Calico Enterprise: преди 3.21.7; 3.22.0 преди 3.22.4
• Tigera Calico Cloud: преди 22.4.0

Вид слабост

• CWE-22 Неправилно ограничаване на път до позволена директория
• CWE-23 Обхождане на директории чрез относителен път

История

Други уязвимости в Tigera Calico

• 6.0CVE-2026-41186
• 6.2CVE-2026-41187
• 7.2CVE-2026-6720
• 6.0CVE-2026-41184
• 6.0CVE-2026-41185

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-6540
• https://nvd.nist.gov/vuln/detail/CVE-2026-6540
• https://github.com/projectcalico/calico/pull/12531
• https://github.com/projectcalico/calico/pull/12532
• https://github.com/projectcalico/calico/pull/12533
• https://www.tigera.io/security-bulletins/tta-2026-005/