{"id":"DEBIAN-CVE-2026-115775","details":"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.","modified":"2026-10-24T13:00:06.981715347Z","published":"2026-10-23T21:17:23.050Z","upstream":["CVE-2026-115775"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-115775"}],"affected":[{"package":{"name":"twisted","ecosystem":"Debian:12","purl":"pkg:deb/debian/twisted?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["22.4.0-4","22.4.0-4+deb12u1","23.10.0-1","23.10.0-2","24.10.0-1","24.10.0-2","24.11.0-1","24.3.0-1","24.3.0-2","24.3.0-3","24.7.0-1","24.7.0-2","24.7.0-3","25.5.0-1","25.5.0-2","25.5.0-3","25.5.0-4","25.5.0-5","26.4.0-1","26.4.0-2","26.4.0-3","26.4.0-4","26.4.0-5","26.4.0-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115775.json"}},{"package":{"name":"twisted","ecosystem":"Debian:13","purl":"pkg:deb/debian/twisted?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["24.11.0-1","25.5.0-1","25.5.0-2","25.5.0-3","25.5.0-4","25.5.0-5","26.4.0-1","26.4.0-2","26.4.0-3","26.4.0-4","26.4.0-5","26.4.0-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115775.json"}},{"package":{"name":"twisted","ecosystem":"Debian:14","purl":"pkg:deb/debian/twisted?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["24.11.0-1","25.5.0-1","25.5.0-2","25.5.0-3","25.5.0-4","25.5.0-5","26.4.0-1","26.4.0-2","26.4.0-3","26.4.0-4","26.4.0-5","26.4.0-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-115775.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}