CVE-2026-115775
Twisted: Unauthenticated Remote Denial of Service in the Twisted words domish XML Element Stream via an Unbounded Element Tree
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, the twisted.words.xish.domish ExpatElementStream parser allows an unauthenticated remote peer to keep a container element open while continuously adding child elements. The parser retains the unfinished stanza as an in-memory tree without a byte or element-count limit, and XMPP pre-authentication stream parsing exposes this behavior before credentials are accepted. A single connection can therefore exhaust server memory and terminate the process. This issue is fixed in version 26.10.0rc1.
| CWE | CWE-400 CWE-770 |
| Vendor | twisted |
| Product | twisted |
| Published | Oct 23, 2026 |
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Affected Versions
twisted / twisted
< 26.10.0rc1
References
github.com: https://github.com/twisted/twisted/security/advisories/GHSA-3476-c5c2-fr73 github.com: https://github.com/twisted/twisted/pull/12751 github.com: https://github.com/twisted/twisted/commit/8873814bec8288e2466fad4d2c4d64039beb88b0 github.com: https://github.com/twisted/twisted/releases/tag/twisted-26.10.0rc1