DeepDiff has Memory Exhaustion DoS through SAFE_TO_IMPORT
Summary
DeepDiff has Memory Exhaustion DoS through SAFE_TO_IMPORT
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-33155 deepdiff
- Ubuntu UBUNTU-CVE-2026-33155 deepdiff
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com