{"id":"DEBIAN-CVE-2026-33155","details":"DeepDiff is a project focused on Deep Difference and search of any Python data. From version 5.0.0 to before version 8.6.2, the pickle unpickler _RestrictedUnpickler validates which classes can be loaded but does not limit their constructor arguments. A few of the types in SAFE_TO_IMPORT have constructors that allocate memory proportional to their input (builtins.bytes, builtins.list, builtins.range). A 40-byte pickle payload can force 10+ GB of memory, which crashes applications that load delta objects or call pickle_load with untrusted data. This issue has been patched in version 8.6.2.","modified":"2026-09-14T17:03:07.829613348Z","published":"2026-03-20T21:17:15.910Z","upstream":["CVE-2026-33155"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-33155"}],"affected":[{"package":{"name":"deepdiff","ecosystem":"Debian:12","purl":"pkg:deb/debian/deepdiff?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.2-1","6.7.1-1","6.7.1-2","8.1.1-1","8.1.1-2","8.1.1-3","8.1.1-4","8.6.1-1","9.0.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33155.json"}},{"package":{"name":"deepdiff","ecosystem":"Debian:13","purl":"pkg:deb/debian/deepdiff?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1.1-4+deb13u1"}]}],"versions":["8.1.1-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33155.json"}},{"package":{"name":"deepdiff","ecosystem":"Debian:14","purl":"pkg:deb/debian/deepdiff?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.0-1"}]}],"versions":["8.1.1-4","8.6.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33155.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}