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PyPI package

marshmallow

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

2 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 5.3PyPIAmendedPublished

    Marshmallow has DoS in Schema.load(many)

    CVE-2025-68480 · GHSA-428g-f7cq-pgp5

    Affected
    • PyPI marshmallow >= 3.0.0rc1, < 3.26.2; >= 4.0.0, < 4.1.2
    Fixed in
    4.1.23.26.2· Vendor fix available
    Issue
    Impact Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. Patches 4.1.2, 3.26.2 Workarounds

    Recommended action: Upgrade to 4.1.2 or 3.26.2 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →
  2. Medium, CVSS 6.9PyPIAmendedPublished

    In marshmallow library the schema "only" option treats an empty list as implying no "only" option

    CVE-2018-17175 · GHSA-9q2p-fj49-vpxj

    Affected
    • PyPI marshmallow < 2.15.1; >= 3.0a0, < 3.0.0b9
    Fixed in
    3.0.0b92.15.1· Vendor fix available
    Issue
    In the marshmallow library before 2.15.1 and 3.x before 3.0.0b9 for Python, the schema "only" option treats an empty list as implying no "only" option, which allows a request that was intended to expose no fields to instead expose all fields (if the schema is being filtered dynamically using the "only" option, and there is a user role that produces an empty value for "only").

    Recommended action: Upgrade to 3.0.0b9 (pre-release) or 2.15.1 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →