RedwoodSDK has a CSRF vulnerability in server function dispatch via GET requests

{
  "id": "c49c16e3764191c0c1ba8e9e905da2ce27297ba90c6d27d71e993aeca3223708",
  "url": "https://osv.dev/vulnerability/CVE-2026-39371",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RedwoodSDK has a CSRF vulnerability in server function dispatch via GET requests",
    "summary": "RedwoodSDK is a server-first React framework. From 1.0.0-beta.50 to 1.0.5, erver functions exported from \"use server\" files could be invoked via GET requests, bypassing their intended HTTP method. In cookie-authenticated applications, this allowed cross-site GET navigations to trigger state-changing functions, because browsers send SameSite=Lax cookies on top-level GET requests. This affected all server functions -- both serverAction() handlers and bare exported functions in \"use server\" files. This vulnerability is fixed in 1.0.6.",
    "evidence": "osv:CVE-2026-39371",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-39371",
      "aliases": [
        "CVE-2026-39371",
        "GHSA-x8rx-789c-2pxq"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/redwoodjs/sdk",
              "type": "GIT",
              "events": [
                {
                  "introduced": "bc3e1a20d3e3dcb084118e68a5b9d7ea17351251"
                },
                {
                  "fixed": "06bc739bbc1a074d5e647f362cfce4193d6ba03e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.0.0-beta.50"
                      },
                      {
                        "fixed": "1.0.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:redwoodjs:redwoodsdk:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.0.1"
                      },
                      {
                        "fixed": "1.0.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.5",
            "v1.0.4",
            "v1.0.3",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0",
            "v1.0.0-beta.58",
            "v1.0.0-beta.57",
            "v1.0.0-beta.56",
            "community-v0.1.2",
            "v1.0.0-beta.55",
            "v1.0.0-beta.54",
            "v1.0.0-beta.53",
            "v1.0.0-beta.52",
            "v1.0.0-beta.51",
            "community-v0.1.1",
            "community-v0.1.0",
            "v1.0.0-beta.50"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39371.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.072115632Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39371.json",
        "https://github.com/redwoodjs/sdk/security/advisories/GHSA-x8rx-789c-2pxq",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-39371"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-352"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39371.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-39371",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509990,
  "published_at": "2026-04-07T19:28:30.941+00:00"
}