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CVE-2026-106434

CVE-2026-106434 · Unrecognized payload acceptance in explicit decryption in MongoDB libmongocrypt

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

The explicit decryption component of MongoDB libmongocrypt can return an unrecognized encrypted payload unchanged instead of returning a decryption error. An actor who can modify stored encrypted fields, such as a database writer, server, or network intermediary, can cause an affected application to process the supplied bytes as decrypted plaintext.

CVSS 5.3 · Medium · EPSS 0.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libmongocrypt

    Versions
    • ≥ 1.5.0, < 1.20.5: Affected (semver)

    Update to 1.20.5

  • libmongocrypt Debian:12

    Versions
    • 1.10.0-1
    • 1.10.1-1
    • 1.11.0-1
    • 1.12.0-1
    • 1.13.0-1
    • 1.13.1-1
    • 1.13.2-1
    • 1.16.0-1
    • 1.17.0-1
    • 1.17.3-1
    • 1.18.1-1
    • 1.18.2-1
    • 1.19.0-1
    • 1.19.1-1
    • 1.20.0-1
    • 1.20.1-1
    • 1.20.2-1
    • 1.20.3-1
    • 1.20.4-1
    • 1.20.5-1
    • 1.7.2-1
    • 1.8.2-1
    • 1.8.4-1
    • 1.9.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libmongocrypt Debian:13

    Versions
    • 1.13.2-1
    • 1.13.2-1+deb13u1
    • 1.16.0-1
    • 1.17.0-1
    • 1.17.3-1
    • 1.18.1-1
    • 1.18.2-1
    • 1.19.0-1
    • 1.19.1-1
    • 1.20.0-1
    • 1.20.1-1
    • 1.20.2-1
    • 1.20.3-1
    • 1.20.4-1
    • 1.20.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libmongocrypt Debian:14

    Versions
    • 1.13.2-1
    • 1.16.0-1
    • 1.17.0-1
    • 1.17.3-1
    • 1.18.1-1
    • 1.18.2-1
    • 1.19.0-1
    • 1.19.1-1
    • 1.20.0-1
    • 1.20.1-1
    • 1.20.2-1
    • 1.20.3-1
    • 1.20.4-1
    Affected ranges
    • ECOSYSTEM: < 1.20.5-1

    Update to 1.20.5-1

  • libmongocrypt Ubuntu:22.04:LTS

    Versions
    • 1.2.1-1
    • 1.2.2-1
    • 1.3.0-1
    • 1.3.0-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libmongocrypt Ubuntu:24.04:LTS

    Versions
    • 1.7.2-1
    • 1.8.2-1
    • 1.8.4-1
    • 1.8.4-1build2
    • 1.8.4-1build3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libmongocrypt Ubuntu:26.10

    Versions
    • 1.17.0-1
    • 1.19.0-1
    • 1.19.1-1
    • 1.20.0-1
    • 1.20.1-1build1
    • 1.20.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libmongocrypt Ubuntu:26.04:LTS

    Versions
    • 1.13.2-1
    • 1.17.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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