CVE-2026-83813 (GCVE-0-2026-83813)

Vulnerability from cvelistv5 – Published: 2026-10-23 20:21 – Updated: 2026-10-23 20:21
VLAI
Title
Twisted: DNS Response Spoofing in twisted.names Due to Missing Source Address Validation
Summary
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's 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.
Severity
3.1 (Low)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-346 - Origin Validation Error
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7838 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
twisted twisted Affected: < 26.7.0rc1
guessed Create a notification for this product.
Show details on NVD website
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          "tags": [
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  "cveMetadata": {
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    "dateReserved": "2026-08-31T23:04:48.173Z",
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          }
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}



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