Resource Exhaustion Affecting twisted package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.95% (60th percentile)

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  • Snyk IDSNYK-ECHOLATEST-TWISTED-20557286
  • published7 Oct 2026
  • disclosed13 May 2026

Introduced: 13 May 2026

CVE-2026-42304  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-407  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest twisted.

NVD Description

Note: Versions mentioned in the description apply only to the upstream twisted package and not the twisted package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.4.0rc2, the twisted.names module is vulnerable to a Denial of Service (DoS) attack via resource exhaustion during DNS name decompression. A remote, unauthenticated attacker can exploit this by sending a crafted TCP DNS packet containing deeply chained compression pointers. This flaw bypasses previous loop-prevention logic, causing the single-threaded Twisted reactor to hang while processing millions of recursive lookups, effectively freezing the server. This vulnerability is fixed in 26.4.0rc2.

CVSS Base Scores

version 3.1