{"id":"UBUNTU-CVE-2026-33151","details":"Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. Prior to versions 3.3.5, 3.4.4, and 4.2.6, a specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. This issue has been patched in versions 3.3.5, 3.4.4, and 4.2.6.","modified":"2026-05-20T16:25:24.106987621Z","published":"2026-03-20T21:17:00Z","upstream":["CVE-2026-33151"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-33151"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-33151"},{"type":"REPORT","url":"https://github.com/socketio/socket.io/security/advisories/GHSA-677m-j7p3-52f9"},{"type":"REPORT","url":"https://github.com/socketio/socket.io/commit/719f9ebab0772ffb882bd614b387e585c1aa75d4"},{"type":"REPORT","url":"https://github.com/socketio/socket.io/commit/9d39f1f080510f036782f2177fac701cc041faaf"},{"type":"REPORT","url":"https://github.com/socketio/socket.io/commit/b25738c416c4e32fbff62ee182afa8f6d0dacf78"}],"affected":[{"package":{"name":"node-socket.io-parser","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-socket.io-parser","binary_version":"2.3.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33151.json"}},{"package":{"name":"node-socket.io-parser","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.0-1","3.4.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.4.0-1","binary_name":"node-socket.io-parser"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33151.json"}},{"package":{"name":"node-socket.io-parser","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.2-1","4.1.1+~3.0.0-1","4.1.2+~3.0.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.1.2+~3.0.0-1","binary_name":"node-socket.io-parser"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33151.json"}},{"package":{"name":"node-socket.io-parser","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.1+~3.1.0-3"],"ecosystem_specific":{"binaries":[{"binary_name":"node-socket.io-parser","binary_version":"4.2.1+~3.1.0-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33151.json"}},{"package":{"name":"node-socket.io-parser","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.1+~3.1.0-3"],"ecosystem_specific":{"binaries":[{"binary_version":"4.2.1+~3.1.0-3","binary_name":"node-socket.io-parser"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33151.json"}},{"package":{"name":"node-socket.io-parser","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/node-socket.io-parser?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.1+~3.1.0-3","4.2.1+~3.1.0-4"],"ecosystem_specific":{"binaries":[{"binary_name":"node-socket.io-parser","binary_version":"4.2.1+~3.1.0-4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33151.json"}}],"schema_version":"1.7.5","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"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}