CVE-2026-33155
High · 7.5CVSS
7.5
EPSS
0.5%
Published
Mar 20, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| openSUSE:Leap 15.6 | python-deepdiff | 0 | 6.3.0-150600.3.6.1 |
| openSUSE:Tumbleweed | python-deepdiff | 0 | 8.6.2-1.1 |
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