{"id":"CVE-2011-4602","aliases":["DEBIAN-CVE-2011-4602","EUVD-2011-4526","GHSA-f6vj-77mr-4rfr","RHSA-2011:1820","RHSA-2011:1821"],"status":"published","title":"The XMPP protocol plugin in libpurple in Pidgin before 2.10.1 does not properly handle missing...","description":"The XMPP protocol plugin in libpurple in Pidgin before 2.10.1 does not properly handle missing fields in (1) voice-chat and (2) video-chat stanzas, which allows remote attackers to cause a denial of service (application crash) via a crafted message.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.03583,"percentile":0.89481,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2011-12-17T02:00:00Z","modified":"2026-10-23T17:47:37Z","fixes":[{"ecosystem":"Debian:12","package":"pidgin","fixed_in":["2.10.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pidgin","fixed_in":["2.10.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"pidgin","fixed_in":["2.10.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pidgin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pidgin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"pidgin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-1"}]}]},{"source":"osv","ecosystem":"Red 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