CVE-2026-6540

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.

Score
CVSS 4.0 7.9 High
Status
Analyzed - psirt@tigera.io
Published
2026-07-30
Last modified
2026-07-30
Weaknesses
CWE-22, CWE-23

Affected products

References

 
 
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