CVE-2026-33155
DeepDiff has Memory Exhaustion DoS through SAFE_TO_IMPORT
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
13th
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.
| CWE | CWE-400 |
| Vendor | seperman |
| Product | deepdiff |
| Published | Mar 20, 2026 |
| Last Updated | Mar 24, 2026 |
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Affected Versions
seperman / deepdiff
>= 5.0.0, < 8.6.2