{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.5.0"
              },
              {
                "last_affected": "3.7.2"
              },
              {
                "introduced": "4.0.0"
              },
              {
                "last_affected": "4.0.1"
              },
              {
                "introduced": "5.0.0"
              },
              {
                "last_affected": "5.4.2"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "33971b8ff54bc55785a7b38c07a21e03bda25080"
            },
            {
              "last_affected": "561824f3077b7615c2fa764bd6d8e7a47e184857"
            },
            {
              "introduced": "81bae7d0360fdf277b2d3e355d02e410ee211ef8"
            },
            {
              "last_affected": "43349033e28d0b6aa38773ff840deba079654a4f"
            },
            {
              "introduced": "8dfabca757830d0821e86206c2db83044e6696f0"
            },
            {
              "last_affected": "cd864d71a5e3b6698b80daee02b2785c4020db10"
            }
          ],
          "repo": "https://github.com/nginx/kubernetes-ingress",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "1.29.4"
              },
              {
                "last_affected": "1.30.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "c70457482c4223b6fd9adc3caa6a302163e6030d"
            },
            {
              "last_affected": "6e14e954aaacce9a433d9b07b4653809c7594ab8"
            }
          ],
          "repo": "https://github.com/nginx/nginx",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:f5:nginx_gateway_fabric:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "1.3.0"
              },
              {
                "last_affected": "1.6.2"
              },
              {
                "introduced": "2.0.0"
              },
              {
                "last_affected": "2.6.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "3a372747333fb1db372af7cf0b18ed7eef7c91f7"
            },
            {
              "last_affected": "532db6a20b2912fe397211eef9f8d564d46a4bdd"
            },
            {
              "introduced": "7dad8b31e3f0c3eadce36fed8c276e83e6583d24"
            },
            {
              "last_affected": "95a66d8cec0ce98e1985aeab728317c5ba7ec0c6"
            }
          ],
          "repo": "https://github.com/nginx/nginx-gateway-fabric",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:f5:nginx_instance_manager:*:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "2.16.0"
          },
          {
            "last_affected": "2.22.0"
          }
        ],
        "source": "CPE_RANGE",
        "vendor_product": "f5:nginx_instance_manager"
      }
    ]
  },
  "details": "When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxy_http_version to 2, and also uses proxy_set_body, an attacker may be able to inject frame headers and payload bytes to the upstream peer.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "CVE-2026-42926",
  "modified": "2026-07-08T05:37:14.567308842Z",
  "published": "2026-05-13T16:16:49.640Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://my.f5.com/manage/s/article/K000161131"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}