CVE-2026-35406 (GCVE-0-2026-35406)

Vulnerability from cvelistv5 – Published: 2026-04-07 21:32 – Updated: 2026-04-08 16:14
VLAI
Title
Aardvark-dns has incorrect error handling for malformed tcp packets
Summary
Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-08 16:09 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
containers aardvark-dns Affected: >= 1.16.0, < 1.17.1
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-35406",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T16:09:52.961124Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-08T16:14:33.190Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "aardvark-dns",
          "vendor": "containers",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.16.0, \u003c 1.17.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-07T21:32:23.512Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j"
        },
        {
          "name": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1"
        },
        {
          "name": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1"
        }
      ],
      "source": {
        "advisory": "GHSA-hfpq-x728-986j",
        "discovery": "UNKNOWN"
      },
      "title": "Aardvark-dns has incorrect error handling for malformed tcp packets"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-35406",
    "datePublished": "2026-04-07T21:32:23.512Z",
    "dateReserved": "2026-04-02T17:03:42.075Z",
    "dateUpdated": "2026-04-08T16:14:33.190Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-35406",
      "date": "2026-10-17",
      "epss": "0.00456",
      "percentile": "0.38147"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "aardvark-dns",
                "vendor": "containers",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 1.16.0, \u003c 1.17.1"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:containers:aardvark-dns:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CD81C8DA-2E94-4EF0-AA53-E33BD76AAE26",
                    "versionEndExcluding": "1.17.1",
                    "versionStartIncluding": "1.16.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1."
          },
          {
            "lang": "es",
            "value": "Aardvark-dns es un servidor DNS autoritativo para registros de contenedor A/AAAA. Desde 1.16.0 hasta 1.17.0, una consulta DNS TCP truncada seguida de un reinicio de conexi\u00f3n provoca que aardvark-dns entre en un bucle de error infinito irrecuperable al 100% de CPU. Esta vulnerabilidad est\u00e1 corregida en 1.17.1."
          }
        ],
        "id": "CVE-2026-35406",
        "lastModified": "2026-07-24T21:10:00.143",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.5,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-35406",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T16:09:52.961124Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-04-07T22:16:23.277",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Release Notes"
            ],
            "url": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1"
          },
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-400"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-21T17:25:05+00:00",
      "cve": "CVE-2026-35406",
      "id": "CVE-2026-35406",
      "initial_release_date": "2026-04-07T21:32:23.512000+00:00",
      "product_status:fixed": "31",
      "product_status:known_affected": "2",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "aardvark-dns: Aardvark-dns: Denial of Service via truncated TCP DNS query and connection reset",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35406.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-35406",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-04-08T16:09:52.961124Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-04-08T16:09:57.346Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "aardvark-dns",
              "vendor": "containers",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003e= 1.16.0, \u003c 1.17.1"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-400",
                  "description": "CWE-400: Uncontrolled Resource Consumption",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-04-07T21:32:23.512Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986j"
            },
            {
              "name": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1"
            },
            {
              "name": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/containers/aardvark-dns/releases/tag/v1.17.1"
            }
          ],
          "source": {
            "advisory": "GHSA-hfpq-x728-986j",
            "discovery": "UNKNOWN"
          },
          "title": "Aardvark-dns has incorrect error handling for malformed tcp packets"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-35406",
        "datePublished": "2026-04-07T21:32:23.512Z",
        "dateReserved": "2026-04-02T17:03:42.075Z",
        "dateUpdated": "2026-04-08T16:14:33.190Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
Events included in the timeline

Loading timeline…


    Loading…

    Loading…

    Loading…

    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.