PT-2026-66493 · Tigera · Calico+2

Anthony Tam + 3 · CVE-2026-6540 · Publicado 2026-07-30 · Atualizado 2026-07-30

Mitre

CVSS v4.0

7.9

Alta

Vetor base

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L

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.

Correção

Relative Path Traversal

Path traversal

Enumeração de Fraquezas

CWE-23

CWE-22

Identificadores relacionados

CVE-2026-6540

Produtos afetados

Calico

Calico Cloud

Calico Enterprise

Referências · 5

• https://github.com/projectcalico/calico/pull/12532 · Correção
• https://github.com/projectcalico/calico/pull/12531 · Correção
• https://github.com/projectcalico/calico/pull/12533 · Correção
• https://nvd.nist.gov/vuln/detail/CVE-2026-6540 · Nota de Segurança
• https://tigera.io/security-bulletins/tta-2026-005 · Aviso do Fabricante