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CVE-2025-68480

CVE-2025-68480 · Marshmallow has DoS in Schema.load(many)

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Marshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2.

CVSS 5.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • marshmallow

    Versions
    • >= 3.0.0rc1, < 3.26.2: Affected
    • >= 4.0.0, < 4.1.2: Affected

    No fix published

  • python-marshmallow Debian:12

    Versions
    • 3.18.0-1
    • 3.20.1-1
    • 3.20.1-1.1
    • 3.26.1-0.1
    • 3.26.1-0.2
    • 3.26.1-0.3
    • 3.26.1-0.4
    • 3.26.2-0.1
    • 3.26.2-0.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-marshmallow Debian:13

    Versions
    • 3.26.1-0.2
    • 3.26.1-0.3
    • 3.26.1-0.4
    Affected ranges
    • ECOSYSTEM: < 3.26.2-0+deb13u1

    Update to 3.26.2-0+deb13u1

  • python-marshmallow Debian:14

    Versions
    • 3.26.1-0.2
    • 3.26.1-0.3
    • 3.26.1-0.4
    Affected ranges
    • ECOSYSTEM: < 3.26.2-0.1

    Update to 3.26.2-0.1

  • marshmallow PyPI

    Versions
    • 3.0.0
    • 3.0.0rc1
    • 3.0.0rc2
    • 3.0.0rc3
    • 3.0.0rc4
    • 3.0.0rc5
    • 3.0.0rc6
    • 3.0.0rc7
    • 3.0.0rc8
    • 3.0.0rc9
    • 3.0.1
    • 3.0.2
    • 3.0.3
    • 3.0.4
    • 3.0.5
    • 3.1.0
    • 3.1.1
    • 3.10.0
    • 3.11.0
    • 3.11.1
    • 3.12.0
    • 3.12.1
    • 3.12.2
    • 3.13.0
    • 3.14.0
    • 3.14.1
    • 3.15.0
    • 3.16.0
    • 3.17.0
    • 3.17.1
    • 3.18.0
    • 3.19.0
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.20.0
    • 3.20.1
    • 3.20.2
    • 3.21.0
    • 3.21.1
    • 3.21.2
    • 3.21.3
    • 3.22.0
    • 3.23.0
    • 3.23.1
    • 3.23.2
    • 3.23.3
    • 3.24.0
    • 3.24.1
    • 3.24.2
    • 3.25.0
    • 3.25.1
    • 3.26.0
    • 3.26.1
    • 3.3.0
    • 3.4.0
    • 3.5.0
    • 3.5.1
    • 3.5.2
    • 3.6.0
    • 3.6.1
    • 3.7.0
    • 3.7.1
    • 3.8.0
    • 3.9.0
    • 3.9.1
    Affected ranges
    • ECOSYSTEM: ≥ 3.0.0rc1, < 3.26.2

    Update to 3.26.2

  • marshmallow PyPI

    Versions
    • 4.0.0
    • 4.0.1
    • 4.1.0
    • 4.1.1
    Affected ranges
    • ECOSYSTEM: ≥ 4.0.0, < 4.1.2

    Update to 4.1.2

  • marshmallow PyPI

    Versions
    • 3.0.0
    • 3.0.0rc1
    • 3.0.0rc2
    • 3.0.0rc3
    • 3.0.0rc4
    • 3.0.0rc5
    • 3.0.0rc6
    • 3.0.0rc7
    • 3.0.0rc8
    • 3.0.0rc9
    • 3.0.1
    • 3.0.2
    • 3.0.3
    • 3.0.4
    • 3.0.5
    • 3.1.0
    • 3.1.1
    • 3.10.0
    • 3.11.0
    • 3.11.1
    • 3.12.0
    • 3.12.1
    • 3.12.2
    • 3.13.0
    • 3.14.0
    • 3.14.1
    • 3.15.0
    • 3.16.0
    • 3.17.0
    • 3.17.1
    • 3.18.0
    • 3.19.0
    • 3.2.0
    • 3.2.1
    • 3.2.2
    • 3.20.0
    • 3.20.1
    • 3.20.2
    • 3.21.0
    • 3.21.1
    • 3.21.2
    • 3.21.3
    • 3.22.0
    • 3.23.0
    • 3.23.1
    • 3.23.2
    • 3.23.3
    • 3.24.0
    • 3.24.1
    • 3.24.2
    • 3.25.0
    • 3.25.1
    • 3.26.0
    • 3.26.1
    • 3.3.0
    • 3.4.0
    • 3.5.0
    • 3.5.1
    • 3.5.2
    • 3.6.0
    • 3.6.1
    • 3.7.0
    • 3.7.1
    • 3.8.0
    • 3.9.0
    • 3.9.1
    • 4.0.0
    • 4.0.1
    • 4.1.0
    • 4.1.1
    Affected ranges
    • ECOSYSTEM: ≥ 3.0.0rc1, < 3.26.2 ∪ ≥ 4.0.0, < 4.1.2

    Update to 3.26.2; Update to 4.1.2

  • python-marshmallow Ubuntu:Pro:20.04:LTS

    Versions
    • 3.0.0b14-1
    • 3.2.1-1
    • 3.2.2-1
    • 3.3.0-1
    • 3.4.0-1
    Affected ranges
    • ECOSYSTEM: < 3.4.0-1ubuntu0.1~esm1

    Update to 3.4.0-1ubuntu0.1~esm1

  • python-marshmallow Ubuntu:Pro:22.04:LTS

    Versions
    • 3.10.0-1
    • 3.13.0-1
    Affected ranges
    • ECOSYSTEM: < 3.13.0-1ubuntu0.1~esm1

    Update to 3.13.0-1ubuntu0.1~esm1

  • python-marshmallow Ubuntu:Pro:24.04:LTS

    Versions
    • 3.18.0-1
    • 3.20.1-1.1
    Affected ranges
    • ECOSYSTEM: < 3.20.1-1.1ubuntu0.1~esm1

    Update to 3.20.1-1.1ubuntu0.1~esm1

  • python-marshmallow Ubuntu:25.10

    Versions
    • 3.26.1-0.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-marshmallow Ubuntu:26.10

    Versions
    • 3.26.1-0.4
    • 3.26.2-0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • python-marshmallow Ubuntu:Pro:26.04:LTS

    Versions
    • 3.26.1-0.2
    • 3.26.1-0.3
    • 3.26.1-0.4
    Affected ranges
    • ECOSYSTEM: < 3.26.1-0.4ubuntu0.1~esm1

    Update to 3.26.1-0.4ubuntu0.1~esm1

Original sources

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