deepdiff: DeepDiff is a project focused on Deep Difference and search of any Python data
CVE-2026-33155 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-33155, released March 20, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| deepdiff · Debian 13.5 (trixie) | 8.1.1-4+deb13u1 | DEBIAN-CVE-2026-33155 | Mar 20, 2026 |
| deepdiff · Debian 14 | 9.0.0-1 | DEBIAN-CVE-2026-33155 | Mar 20, 2026 |
| python-deepdiff · opensuse-leap 15.6 | 6.3.0-150600.3.6.1 | SUSE-SU-2026:1094-1 | Mar 26, 2026 |
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