{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "twisted",
          "vendor": "twisted",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.7.0rc1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.names.dns.DNSDatagramProtocol accepts a UDP DNS response for a pending query when its 16-bit transaction ID matches but does not verify that the response came from the queried host and port. An attacker able to deliver a packet to the resolver\u0027s listening port with the correct transaction ID can inject a forged answer. The standard twisted.names.client.Resolver uses a new random source port for each query, increasing off-path attack complexity, while applications that reuse a DNSDatagramProtocol instance expose only the transaction-ID search space after the first query. A successful forgery can redirect hostname resolution and enable mail interception, server-side request forgery, or man-in-the-middle positioning. This issue is fixed in version 26.10.0rc1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-23T20:21:54.364Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/twisted/twisted/security/advisories/GHSA-jj36-9pvh-vj5r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/twisted/twisted/security/advisories/GHSA-jj36-9pvh-vj5r"
        },
        {
          "name": "https://github.com/twisted/twisted/pull/12700",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/twisted/twisted/pull/12700"
        },
        {
          "name": "https://github.com/twisted/twisted/commit/b53e1c3477c209b5609a1c74cf9e48373b5879ac",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/twisted/twisted/commit/b53e1c3477c209b5609a1c74cf9e48373b5879ac"
        },
        {
          "name": "https://github.com/twisted/twisted/releases/tag/twisted-26.10.0rc1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/twisted/twisted/releases/tag/twisted-26.10.0rc1"
        }
      ],
      "source": {
        "advisory": "GHSA-jj36-9pvh-vj5r",
        "discovery": "UNKNOWN"
      },
      "title": "Twisted: DNS Response Spoofing in twisted.names Due to Missing Source Address Validation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-83813",
    "datePublished": "2026-10-23T20:21:54.364Z",
    "dateReserved": "2026-08-31T23:04:48.173Z",
    "dateUpdated": "2026-10-23T20:21:54.364Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}