Unauthenticated OAuth state CSRF via empty-state collision in ValidateOAuthState in github.com/hatchet-dev/hatchet

{
  "id": "2039befa411f5a39948b6ba2615b4a53b7c52ae20c92a5297752b9865d6a61ac",
  "url": "https://osv.dev/vulnerability/GO-2026-6535",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Unauthenticated OAuth state CSRF via empty-state collision in ValidateOAuthState in github.com/hatchet-dev/hatchet",
    "summary": "Unauthenticated OAuth state CSRF via empty-state collision in ValidateOAuthState in github.com/hatchet-dev/hatchet",
    "evidence": "osv:GO-2026-6535",
    "products": [
      {
        "name": {
          "value": "github.com/hatchet-dev/hatchet",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.91.2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2026-6535",
      "aliases": [
        "CVE-2026-61687",
        "GHSA-phg3-3g28-wq9v",
        "GO-2026-6535"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.91.2"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/hatchet-dev/hatchet",
            "purl": "pkg:golang/github.com/hatchet-dev/hatchet",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2026-6535.json"
          },
          "ecosystem_specific": {
            "imports": [
              {
                "path": "github.com/hatchet-dev/hatchet/api/v1/server/authn",
                "symbols": [
                  "SessionHelpers.ValidateOAuthState"
                ]
              }
            ]
          }
        }
      ],
      "modified": "2026-10-07T17:45:12.975811531Z",
      "provider": "osv",
      "references": [
        "https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-phg3-3g28-wq9v",
        "https://github.com/hatchet-dev/hatchet/commit/f90464189ad642251e09412d0f99fde353036428"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2026-6535",
        "review_status": "REVIEWED"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-61687",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 97103,
  "published_at": "2026-09-28T16:43:40+00:00"
}