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CVE-2026-113602

json-smart through 2.6.0 Strict-Mode Validation Bypass via 0x1A Character

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 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Json-smart Project
Products
Json-smart
CVE-2021-27568

json-smart: uncaught exception may lead to crash or information disclosure

An issue was discovered in netplex json-smart-v1 through 2015-10-23 and json-smart-v2 through 2.4. An exception is thrown from a function, but it is not caught, as demonstrated by NumberFormatException. When it is not caught, it may cause programs using the library to crash or expose sensitive information.

CVSS 3.1 · 5.9 Medium EPSS 2.9% KEV · Not listed
Vendors
Json-smart Project Oracle Redhat
Products
Json-smart-v1 Json-smart-v2 Communications Cloud Native Core Policy and 8 more
CVE-2023-1370

Stack exhaustion in json-smart leads to denial of service when parsing malformed JSON

[Json-smart](https://netplex.github.io/json-smart/) is a performance focused, JSON processor lib. When reaching a ‘[‘ or ‘{‘ character in the JSON input, the code parses an array or an object respectively. It was discovered that the code does not have any limit to the nesting of such arrays or objects. Since the parsing of nested arrays and objects is done recursively, nesting too many of them can cause a stack exhaustion (stack overflow) and crash the software.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
Vendors
Json-smart Project Redhat
Products
Json-smart Amq Clients Amq Streams and 6 more