Resource Exhaustion Affecting localstack package, versions <4.14.0-r4


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.45% (36th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LOCALSTACK-15753609
  • published23 Mar 2026
  • disclosed20 Mar 2026

Introduced: 20 Mar 2026

CVE-2026-33155  (opens in a new tab)
CWE-400  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Chainguard localstack to version 4.14.0-r4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream localstack package and not the localstack package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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 Base Scores

version 3.1