CVE-2026-115775: twisted · Uncontrolled Resource Consumption
Affects twistedSource CVE Database V5
Not known to be exploited · CVSS 8.7 High : upgrade to 26.10.0rc1 soon.
Data as of 26 Oct 2026, 14:18 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 26.10.0rc1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade twisted to 26.10.0rc1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| twistedtwisted | Affected
| Fixed in
|
AI-suggested
Upgrade to Twisted version 26.10.0rc1 or later, where this vulnerability is fixed. No other mitigation is required as the issue is resolved in the official patch.
Description
CVE-2026-115775 is a high-severity vulnerability in the Twisted event-based framework for Python. The issue exists in the twisted.words.xish.domish ExpatElementStream parser prior to version 26.10.0rc1, where an unauthenticated remote peer can keep a container element open while continuously adding child elements. This causes the parser to retain the unfinished stanza as an in-memory tree without limits, potentially exhausting server memory and causing process termination. The vulnerability is fixed in version 26.10.0rc1.
References
- github.com/twisted/twisted/security/advisories/GHSA-3476-c5c2-fr73 (opens in a new tab)
- github.com/twisted/twisted/pull/12751 (opens in a new tab)
- github.com/twisted/twisted/commit/8873814bec8288e2466fad4d2c4d64039beb88b0 (opens in a new tab)
- github.com/twisted/twisted/releases/tag/twisted-26.10.0rc1 (opens in a new tab)