Security advisory

{
  "id": "5e22df1253a96e1e9edcbd35a2456cd47bc8c97a25eba881f1db3eddf2a21206",
  "url": "https://osv.dev/vulnerability/CVE-2021-29258",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-29258",
    "summary": "An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.",
    "evidence": "osv:CVE-2021-29258",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-29258",
      "aliases": [
        "BIT-envoy-2021-29258",
        "CVE-2021-29258"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/envoyproxy/envoy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ca0d61134a84ce644c7f46549a06a99579fb97c0"
                },
                {
                  "last_affected": "d6a4496e712d7a2335b26e2f76210d5904002c26"
                },
                {
                  "fixed": "de12027c9c2de685d85cf1bf0db58280ac06d0a3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:1.14.6:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.14.6"
                      },
                      {
                        "last_affected": "1.14.6"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:1.15.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.15.3"
                      },
                      {
                        "last_affected": "1.15.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:1.16.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.16.2"
                      },
                      {
                        "last_affected": "1.16.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:envoyproxy:envoy:1.17.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.17.1"
                      },
                      {
                        "last_affected": "1.17.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "de12027c9c2de685d85cf1bf0db58280ac06d0a3"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.14.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.14.6",
            "1.15.3",
            "1.16.2",
            "1.17.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29258.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:36.960740868Z",
      "provider": "osv",
      "references": [
        "https://blog.envoyproxy.io",
        "https://github.com/envoyproxy/envoy/releases/tag/v1.14.0",
        "https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j",
        "https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg",
        "https://github.com/envoyproxy/envoy-setec/pull/230"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-29258",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385739,
  "published_at": "2021-05-20T17:15:07.74+00:00"
}