Envoy vulnerable to OAuth2 credentials exploit with permanent validity

{
  "id": "4d92a65860274c47893ccb15ddab3932915982d347bd3d46fb25181289a43f7e",
  "url": "https://osv.dev/vulnerability/CVE-2023-35941",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Envoy vulnerable to OAuth2 credentials exploit with permanent validity",
    "summary": "Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, a malicious client is able to construct credentials with permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC payload can be always valid in OAuth2 filter's check. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, avoid wildcards/prefix domain wildcards in the host's domain configuration.",
    "evidence": "osv:CVE-2023-35941",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-35941",
      "aliases": [
        "BIT-envoy-2023-35941",
        "CVE-2023-35941",
        "GHSA-7mhv-gr67-hq55"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/envoyproxy/envoy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ce49c7f65668a22b80d1e83c35d170741bb8d46a"
                },
                {
                  "fixed": "9689bc57f80fe56dbb16a4e0d632cde5363d1811"
                },
                {
                  "introduced": "15baf56003f33a07e0ab44f82f75a660040db438"
                },
                {
                  "fixed": "5adb03f52a6399fe5a31fdb603d5009d8d59cdb9"
                },
                {
                  "introduced": "9184b84cd0dcb3a6c57eb44b177d91c70e1a0901"
                },
                {
                  "fixed": "7b2609e12147377b0420bfa4453762e377f218f3"
                },
                {
                  "introduced": "51964702956d64adcd1df6b8ea132e863fe78e74"
                },
                {
                  "fixed": "cfa32deca25ac57c2bbecdad72807a9b13493fc1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.23.0"
                      },
                      {
                        "fixed": "1.23.12"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.24.0"
                      },
                      {
                        "fixed": "1.24.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.25.0"
                      },
                      {
                        "fixed": "1.25.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.26.0"
                      },
                      {
                        "fixed": "1.26.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.26.3",
            "v1.25.8",
            "v1.24.9",
            "v1.23.11",
            "v1.24.8",
            "v1.26.2",
            "v1.23.10",
            "v1.25.7",
            "v1.25.6",
            "v1.24.7",
            "v1.26.1",
            "v1.23.9",
            "v1.25.5",
            "v1.24.6",
            "v1.23.8",
            "v1.26.0",
            "v1.25.4",
            "v1.23.7",
            "v1.24.5",
            "v1.25.3",
            "v1.23.6",
            "v1.24.4",
            "v1.25.2",
            "v1.23.5",
            "v1.24.3",
            "v1.24.2",
            "v1.23.4",
            "v1.25.1",
            "v1.25.0",
            "v1.24.1",
            "v1.23.3",
            "v1.23.2",
            "v1.24.0",
            "v1.23.1",
            "v1.23.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-35941.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.872634377Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/35xxx/CVE-2023-35941.json",
        "https://github.com/envoyproxy/envoy/security/advisories/GHSA-7mhv-gr67-hq55",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-35941"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-116"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/35xxx/CVE-2023-35941.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-35941",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509353,
  "published_at": "2023-07-25T17:40:56.203+00:00"
}