{"action":"Upgrade xen to 4.20.3+127-gc42374a105-0+deb13u1 or later.","affected":[{"fixed":"4.20.3+127-gc42374a105-0+deb13u1","introduced":"0"}],"component":"xen","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["4.20.3+127-gc42374a105-0+deb13u1"],"id":"tcs_01M5NR3X1565EEGMBBTS4MM1JC","modified_at":"2026-10-01T03:03:20.990349280Z","published_at":"2026-03-23T07:16:07.330Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-23555","https://security-tracker.debian.org/tracker/CVE-2026-23555"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-23555","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-23555"}],"summary":"Any guest issuing a Xenstore command accessing a node using the (illegal) node path \"/local/domain/\", will crash xenstored due to a clobbered error indicator in xenstored when verifying the node path."}