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CVE-2026-106429

CVE-2026-106429 · Application denial of service via malformed KMS endpoint in MongoDB libmongocrypt

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

An integer underflow in the KMS endpoint-parsing logic of MongoDB libmongocrypt can cause an allocation failure that terminates the application process. This can occur when an authenticated user modifies a key document in the key vault collection, or when an application accepts a KMS endpoint containing a colon after its path or query during key creation. The issue does not access memory outside its allocated bounds.

CVSS 7.1 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libmongocrypt

    Versions
    • ≥ 1.1.0, < 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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