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CVE-2026-4538

CVE-2026-4538 · PyTorch pt2 Loading deserialization

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

A vulnerability was identified in PyTorch 2.10.0. The affected element is an unknown function of the component pt2 Loading Handler. The manipulation leads to deserialization. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The project was informed of the problem early through a pull request but has not reacted yet.

CVSS 4.8 · Medium · EPSS 0.4%

Published
Updated

Stack: system · python

Affected products and versions

  • pytorch

    Versions
    • 2.10.0: Affected

    No fix published

  • pytorch Debian:12

    Versions
    • 1.13.1+dfsg-4
    • 1.13.1+dfsg-5
    • 2.0.1+dfsg-1
    • 2.0.1+dfsg-1~exp1
    • 2.0.1+dfsg-2
    • 2.0.1+dfsg-4
    • 2.0.1+dfsg-5
    • 2.1.2+dfsg-1
    • 2.1.2+dfsg-2
    • 2.1.2+dfsg-4
    • 2.12.0+dfsg2-1
    • 2.12.0+dfsg2-1~exp1
    • 2.12.0+dfsg2-1~exp2
    • 2.12.0+dfsg2-2
    • 2.12.0+dfsg2-3
    • 2.12.0+dfsg2-4
    • 2.12.1+dfsg-1
    • 2.4.1-1
    • 2.4.1-3
    • 2.4.1-4
    • 2.5.0+dfsg-1
    • 2.5.1+dfsg-1
    • 2.5.1+dfsg-3
    • 2.5.1+dfsg-4
    • 2.6.0+dfsg-1
    • 2.6.0+dfsg-1~exp1
    • 2.6.0+dfsg-2
    • 2.6.0+dfsg-3
    • 2.6.0+dfsg-4
    • 2.6.0+dfsg-5
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-8
    • 2.6.0+dfsg-9
    • 2.6.0~rc9+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp2
    • 2.9.1+dfsg-1~exp1
    • 2.9.1+dfsg-1~exp2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Debian:13

    Versions
    • 2.12.0+dfsg2-1
    • 2.12.0+dfsg2-1~exp1
    • 2.12.0+dfsg2-1~exp2
    • 2.12.0+dfsg2-2
    • 2.12.0+dfsg2-3
    • 2.12.0+dfsg2-4
    • 2.12.1+dfsg-1
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-8
    • 2.6.0+dfsg-9
    • 2.9.0+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp2
    • 2.9.1+dfsg-1~exp1
    • 2.9.1+dfsg-1~exp2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Debian:14

    Versions
    • 2.12.0+dfsg2-1
    • 2.12.0+dfsg2-1~exp1
    • 2.12.0+dfsg2-1~exp2
    • 2.12.0+dfsg2-2
    • 2.12.0+dfsg2-3
    • 2.12.0+dfsg2-4
    • 2.12.1+dfsg-1
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-8
    • 2.6.0+dfsg-9
    • 2.9.0+dfsg-1~exp1
    • 2.9.0+dfsg-1~exp2
    • 2.9.1+dfsg-1~exp1
    • 2.9.1+dfsg-1~exp2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • torch PyPI

    Versions
    • 1.0.0
    • 1.0.1
    • 1.1.0
    • 1.10.0
    • 1.10.1
    • 1.10.2
    • 1.11.0
    • 1.12.0
    • 1.12.1
    • 1.13.0
    • 1.13.1
    • 1.2.0
    • 1.3.0
    • 1.3.1
    • 1.4.0
    • 1.5.0
    • 1.5.1
    • 1.6.0
    • 1.7.0
    • 1.7.1
    • 1.8.0
    • 1.8.1
    • 1.9.0
    • 1.9.1
    • 2.0.0
    • 2.0.1
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.10.0
    • 2.2.0
    • 2.2.1
    • 2.2.2
    • 2.3.0
    • 2.3.1
    • 2.4.0
    • 2.4.1
    • 2.5.0
    • 2.5.1
    • 2.6.0
    • 2.7.0
    • 2.7.1
    • 2.8.0
    • 2.9.0
    • 2.9.1
    Affected ranges
    • ECOSYSTEM: ≤ 2.10.0

    No fix published

  • pytorch Ubuntu:22.04:LTS

    Versions
    • 1.7.1-7
    • 1.8.1-4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Ubuntu:25.10

    Versions
    • 2.6.0+dfsg-5build1
    • 2.6.0+dfsg-7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Ubuntu:26.10

    Versions
    • 2.9.1+dfsg-1~exp1ubuntu2
    • 2.12.1+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • pytorch Ubuntu:26.04:LTS

    Versions
    • 2.6.0+dfsg-7
    • 2.6.0+dfsg-9
    • 2.9.1+dfsg-1~exp1ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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