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CVE-2026-113602

CVE-2026-113602 · json-smart through 2.6.0 Strict-Mode Validation Bypass via 0x1A Character

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

json-smart through 2.6.0 contains an input validation bypass vulnerability that allows attackers to evade strict-mode trailing-data checks by inserting a literal 0x1A character. Attackers can append 0x1A and malformed content to pass JSONValue.parseStrict or isValidJsonStrict validation, creating parser differentials with downstream parsers like Jackson or Gson.

CVSS 6.9 · Medium · EPSS 0.4%

Published
Updated

Stack: system

Affected products and versions

  • json-smart

    Versions
    • ≥ 0, ≤ 2.6.0: Affected (semver)

    No fix published

  • json-smart Debian:12

    Versions
    • 2.2-2
    • 2.2-2+deb12u1
    • 2.2-3
    • 2.5.1-1
    • 2.5.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Debian:13

    Versions
    • 2.5.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Debian:14

    Versions
    • 2.5.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Ubuntu:18.04:LTS

    Versions
    • 2.2-1
    • 2.2-2
    • 2.2-2ubuntu0.18.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Ubuntu:20.04:LTS

    Versions
    • 2.2-2
    • 2.2-2ubuntu0.20.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Ubuntu:22.04:LTS

    Versions
    • 2.2-2
    • 2.2-2ubuntu0.22.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Ubuntu:24.04:LTS

    Versions
    • 2.2-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Ubuntu:26.10

    Versions
    • 2.5.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • json-smart Ubuntu:26.04:LTS

    Versions
    • 2.5.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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