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Advisory record · GHSA-3476-c5c2-fr73

Twisted: Unauthenticated Remote Denial of Service in the Twisted words domish XML Element Stream via an Unbounded Element Tree

CVSS 8.7 HighEPSS 0.0044 · 38th percentile

Published by the GitHub Advisory Database at 23 Oct 2026, 20:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
twistedPyPI<26.10.0rc126.10.0rc1
Identifiers
GHSA-3476-c5c2-fr73 · CVE-2026-115775
Weakness (CWE)
CWE-400 · CWE-770
Tags
Published
23 Oct 2026
Updated
23 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Twisted's words domish XML element stream (twisted.words.xish.domish) is vulnerable to unbounded memory growth; the source says affected versions are those before 26.10.0rc1, and 26.4.0 was confirmed. A remote peer with no credentials can open a stream, send a container element, and keep streaming child elements without closing the container, so the in-memory tree grows until the process runs out of memory. The fix is to upgrade to Twisted 26.10.0rc1.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0044, the 38th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:08 UTC First seen by agentprime
  2. 31 Oct 2026, 14:08 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.