v4.16.2

{
  "id": "f6227a4c36034912780ef3f1eedcf55c0e918007c506a899ed1c3303e36c8d8b",
  "url": "https://github.com/labstack/echo/releases/tag/v4.16.2",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "v4.16.2",
    "summary": "Echo v4.16.2 fixes Basic authentication scheme parsing and strengthens CSRF token validation, including rejecting configurations that provide no recognized token extractors.",
    "evidence": "Fixes Require a space after the case-insensitive Basic authentication scheme. Malformed schemes such as BasicX no longer invoke the credential validator. Valid credentials are still required. This adapts the v5 correction to v4's single-header API. #3188, backport of #3138, with credit 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. #3189, backport of #3135, with credit to @hoangtaiki. Reject CSRFConfig.TokenLookup configurations that produce no recognized token extractors. Middleware creation now returns an error instead of silently skipping token validation. #3149, thanks to @orinnz; backport of the existing v5 validation in #3067.",
    "products": [
      {
        "name": {
          "value": "github.com/labstack/echo/v4",
          "evidence": "Upgrade go get github.com/labstack/echo/v4@v4.16.2"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "v4.16.2",
            "evidence": "Upgrade go get github.com/labstack/echo/v4@v4.16.2"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "github-labstack-echo",
  "document_id": 21584,
  "published_at": "2026-10-23T01:54:51+00:00"
}