Description
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.
Published: 2026-10-20
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 20 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description 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.
Title json-smart through 2.6.0 Strict-Mode Validation Bypass via 0x1A Character
First Time appeared Json-smart Project
Json-smart Project json-smart
Weaknesses CWE-147
CPEs cpe:2.3:a:json-smart_project:json-smart:*:*:*:*:*:*:*:*
Vendors & Products Json-smart Project
Json-smart Project json-smart
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Json-smart Project Json-smart
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-20T16:30:53.742Z

Reserved: 2026-10-20T11:48:48.998Z

Link: CVE-2026-113602

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-20T16:17:09.923

Modified: 2026-10-20T16:17:09.923

Link: CVE-2026-113602

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses