CVE-2026-33155

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/qlustered/deepdiff/commit/0d07ec21d12b46ef4e489383b363eadc22d990fb
https://github.com/qlustered/deepdiff/security/advisories/GHSA-54jj-px8x-5w5q

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-20 21:17

Updated : 2026-03-23 14:32

NVD link : CVE-2026-33155

Mitre link : CVE-2026-33155

CVE.ORG link : CVE-2026-33155

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

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