Release notes from echo v5.4.2

{
  "id": "6bae90776cc4c8822ee51381ef86970a44601e0ab8d213497bea13403807d81d",
  "url": "https://github.com/labstack/echo/releases/tag/v5.4.2",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "Release notes from echo v5.4.2",
    "summary": "Echo v5.4.2 fixes Basic authentication scheme parsing and rejects empty cookie and client tokens during CSRF validation. The release also includes the security fixes from v5.4.1 unchanged.",
    "evidence": "Fixes Require a space after the case-insensitive Basic authentication scheme. Malformed schemes such as BasicX no longer reach credential validation or consume AllowedCheckLimit. Valid credentials are still required. #3138, thanks to @Shubham-Padkonde. Reject empty cookie tokens and empty client tokens in CSRF validation. This is defense in depth; it does not introduce a new security advisory. #3135, thanks to @hoangtaiki.",
    "products": [
      {
        "name": {
          "value": "echo",
          "evidence": "Release notes from echo"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "v5.4.2",
            "evidence": "v5.4.2"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "github-labstack-echo",
  "document_id": 21585,
  "published_at": "2026-10-23T01:54:52+00:00"
}