CVE-2026-113602
json-smart through 2.6.0 Strict-Mode Validation Bypass via 0x1A Character
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 20, 2026
- Updated
- Oct 20, 2026
- Reserved
- Oct 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-147 Improper Neutralization of Input Terminators
Affected Products
| Product | Versions |
|---|---|
json-smartjson-smart |
|
References
- https://github.com/netplex/json-smart-v2/issues/302issue-tracking
- https://github.com/netplex/json-smart-v2/blob/v2.6.0/json-smart/src/main/java/net/minidev/json/parser/JSONParserBase.javatechnical-description
- VulnCheck Advisory: json-smart through 2.6.0 Strict-Mode Validation Bypass via 0x1A Characterthird-party-advisory
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