AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

OR
          *cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:* versions up to (excluding) 3.21.7
          *cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:* versions up to (excluding) 3.31.6
          *cpe:2.3:a:tigera:calico:*:*:*:*:open_source:*:*:* versions from (including) 3.32.0 up to (excluding) 3.32.1
          *cpe:2.3:a:tigera:calico:*:*:*:*:cloud:*:*:* versions up to (including) 22.4.0
          *cpe:2.3:a:tigera:calico:*:*:*:*:enterprise:*:*:* versions from (including) 3.22.0 up to (excluding) 3.22.4

Tigera, Inc.: https://github.com/projectcalico/calico/pull/12531 Types: Issue Tracking, Patch

Tigera, Inc.: https://github.com/projectcalico/calico/pull/12532 Types: Issue Tracking, Patch

Tigera, Inc.: https://github.com/projectcalico/calico/pull/12533 Types: Issue Tracking, Patch

Tigera, Inc.: https://www.tigera.io/security-bulletins/tta-2026-005/ Types: Vendor Advisory

{"timestamp":"2026-07-30T16:12:00.537090Z","id":"CVE-2026-6540","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

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.

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE-22

CWE-23

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/

[{"vendor":"Tigera","product":"Calico","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.31.6","versionType":"semver","status":"affected"}]},{"vendor":"Tigera","product":"Calico Enterprise","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"3.21.7","versionType":"semver","status":"affected"},{"version":"3.22.0","lessThan":"3.22.4","versionType":"semver","status":"affected"}]},{"vendor":"Tigera","product":"Calico Cloud","defaultStatus":"unaffected","versions":[{"version":"0","lessThan":"22.4.0","versionType":"semver","status":"affected"}]}]