{"action":"Upgrade thunderbird to 1:153.5.1esr-1~deb13u1 or later.","affected":[{"fixed":"1:153.5.1esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:153.5.1esr-1~deb13u1"],"id":"tcs_01M5NQB2VVEBXMKX6QFSRG9JB9","modified_at":"2026-10-26T00:00:14.629844466Z","published_at":"2026-10-20T20:17:19.570Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-113867","https://security-tracker.debian.org/tracker/CVE-2026-113867"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-113867#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-113867"}],"summary":"Thunderbird did not escape attribute values when serializing outgoing XMPP stanzas. Because values from incoming requests were echoed back in automatic replies, a remote XMPP user could send a crafted"}