CVE catalog

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 loa

[CVE catalog]

Severity
High · CVSS 8.7
Published
Source
[NVD] · [CVE record]
EPSS
0.46% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiandeepdiffsid9.0.0-2fixed
Debiandeepdiffforky9.0.0-2fixed
Debiandeepdifftrixie8.1.1-4+deb13u1fixed
Debiandeepdiffbookworm6.2.2-1vulnerable
PipdeepdiffNot reported8.6.2fixed
CpedeepdiffNot reportedNot reportedvulnerable
Opensusepython-deepdiffleap 15.66.3.0-150600.3.6.1fixed
Opensusepython-deepdifftumbleweed8.6.2-1.1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiandeepdiffsourcesid9.0.0-1not yet assignedNot reported[1131472]
Debiandeepdiffsourceforky9.0.0-1not yet assignedNot reported[1131472]
Debiandeepdiffsourcetrixie8.1.1-4+deb13u1not yet assignedNot reported[1131472]
Debiandeepdiffsourcebookworm(unfixed)not yet assignedNot reported[1131472]
PipdeepdiffpipNot reported8.6.2Not reportedNot reportedNot reported
Opensusepython-deepdiffrpmleap 15.66.3.0-150600.3.6.1Not reportedSUSE-SU-2026:1094-1Not reported
Opensusepython-deepdiffrpmtumbleweed8.6.2-1.1Not reportedOPENSUSE-SU-2026:10417-1Not reported

[Debian bug #1131472]

Notes

[bookworm] deepdiff: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [python3-deepdiff]Affected

    Source package: [deepdiff]

    Details (2)

    • 6.2.2-1 · all · bookworm

      Affected

      nvd · deepdiff · debian · bookworm; nvd · deepdiff · debian · 12

    • 6.2.2-1 · all · bookworm

      Affected

      nvd · deepdiff · debian · bookworm; nvd · deepdiff · debian · 12

[openSUSE Tumbleweed]

  • [python313-deepdiff]Unknown

    Source package: [python-deepdiff]

    Details (1)

    • 9.0.0-2.1 · noarch · tumbleweed

      Unknown · Fixed: 8.6.2-1.1

      Version impact unknown

      nvd · python-deepdiff · opensuse · tumbleweed

  • [python314-deepdiff]Unknown

    Source package: [python-deepdiff]

    Details (1)

    • 9.0.0-2.1 · noarch · tumbleweed

      Unknown · Fixed: 8.6.2-1.1

      Version impact unknown

      nvd · python-deepdiff · opensuse · tumbleweed

[Debian 13 (Trixie)]

  • [python3-deepdiff]Fixed

    Source package: [deepdiff]

    Details (2)

    • 8.1.1-4+deb13u1 · all · trixie

      Fixed · Fixed: 8.1.1-4+deb13u1

      nvd · deepdiff · debian · 13

    • 8.1.1-4+deb13u1 · all · trixie

      Fixed · Fixed: 8.1.1-4+deb13u1

      nvd · deepdiff · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]