{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.0"
              },
              {
                "last_affected": "1.0"
              },
              {
                "introduced": "1.1"
              },
              {
                "last_affected": "1.1"
              },
              {
                "introduced": "1.2"
              },
              {
                "last_affected": "1.2"
              },
              {
                "introduced": "1.3"
              },
              {
                "last_affected": "1.3"
              },
              {
                "introduced": "1.4"
              },
              {
                "last_affected": "1.4"
              },
              {
                "introduced": "1.5"
              },
              {
                "last_affected": "1.5"
              },
              {
                "introduced": "1.6"
              },
              {
                "last_affected": "1.6"
              },
              {
                "introduced": "1.7"
              },
              {
                "last_affected": "1.7"
              },
              {
                "introduced": "1.8"
              },
              {
                "last_affected": "1.8"
              },
              {
                "introduced": "1.9"
              },
              {
                "last_affected": "1.9"
              },
              {
                "introduced": "1.10"
              },
              {
                "last_affected": "1.10"
              },
              {
                "introduced": "1.11"
              },
              {
                "last_affected": "1.11"
              },
              {
                "introduced": "1.12"
              },
              {
                "last_affected": "1.12"
              },
              {
                "introduced": "1.13"
              },
              {
                "last_affected": "1.13"
              },
              {
                "introduced": "1.14"
              },
              {
                "last_affected": "1.14"
              },
              {
                "introduced": "1.15"
              },
              {
                "last_affected": "1.15"
              },
              {
                "introduced": "1.16"
              },
              {
                "last_affected": "1.16"
              },
              {
                "introduced": "1.17"
              },
              {
                "last_affected": "1.17"
              },
              {
                "introduced": "1.18"
              },
              {
                "last_affected": "1.18"
              },
              {
                "introduced": "1.19"
              },
              {
                "last_affected": "1.19"
              },
              {
                "introduced": "1.20"
              },
              {
                "last_affected": "1.20"
              },
              {
                "introduced": "1.21"
              },
              {
                "last_affected": "1.21"
              },
              {
                "introduced": "1.22"
              },
              {
                "last_affected": "1.22"
              },
              {
                "introduced": "1.23"
              },
              {
                "last_affected": "1.23"
              },
              {
                "introduced": "1.24"
              },
              {
                "last_affected": "1.24"
              },
              {
                "introduced": "1.25"
              },
              {
                "last_affected": "1.25"
              },
              {
                "introduced": "1.26"
              },
              {
                "last_affected": "1.26"
              },
              {
                "introduced": "1.27"
              },
              {
                "last_affected": "1.27"
              },
              {
                "introduced": "1.28"
              },
              {
                "last_affected": "1.28"
              },
              {
                "introduced": "1.29"
              },
              {
                "last_affected": "1.29"
              },
              {
                "introduced": "1.30"
              },
              {
                "last_affected": "1.30"
              },
              {
                "introduced": "1.31"
              },
              {
                "last_affected": "1.31"
              },
              {
                "introduced": "1.32"
              },
              {
                "last_affected": "1.32"
              },
              {
                "introduced": "1.33.0"
              },
              {
                "last_affected": "1.33.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "ef54a03858d0be3e7768d37b5a8c0b136b664e21"
            },
            {
              "fixed": "f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4"
            }
          ],
          "repo": "https://github.com/envoyproxy/envoy",
          "type": "GIT"
        }
      ],
      "versions": [
        "1.0",
        "1.1",
        "1.10",
        "1.11",
        "1.12",
        "1.13",
        "1.14",
        "1.15",
        "1.16",
        "1.17",
        "1.18",
        "1.19",
        "1.2",
        "1.20",
        "1.21",
        "1.22",
        "1.23",
        "1.24",
        "1.25",
        "1.26",
        "1.27",
        "1.28",
        "1.29",
        "1.3",
        "1.30",
        "1.31",
        "1.32",
        "1.33.0",
        "1.4",
        "1.5",
        "1.6",
        "1.7",
        "1.8",
        "1.9"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-707",
      "CWE-74"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6994.json"
  },
  "details": "A weakness has been identified in Envoy up to 1.33.0. Affected is the function params.add of the file source/extensions/filters/http/header_mutation/header_mutation.cc of the component Query Parameter Handler. This manipulation causes injection. Remote exploitation of the attack is possible. Patch name: f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4. It is suggested to install a patch to address this issue.",
  "id": "CVE-2026-6994",
  "modified": "2026-07-08T05:37:29.997394528Z",
  "published": "2026-04-25T19:00:19.151Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6994.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6994"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/797241"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/359546"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/359546/cti"
    },
    {
      "type": "FIX",
      "url": "https://github.com/envoyproxy/envoy/commit/f8f4f1e02fdc64ecd4acf2d903208dd7285ad3a4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/envoyproxy/envoy/pull/43502/"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Envoy Query Parameter header_mutation.cc params.add injection"
}