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Fencer Vulns
medium 5.3

CVE-2026-113602 json

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

published 2026-10-20 20 d ago modified 2026-10-20 19 d ago also EUVD-2026-105168

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-113602 updated cvss 5.3

net.minidev/json-smart: json-smart: Input validation bypass via substitute character in strict mode

  • Red Hat OpenShift Developer Tools and Services ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9, jenkins-2-plugins 4.19.1758207171-1.el9
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9 Red Hat build of Apache Camel - HawtIO 4 json-smart 2.6.0.redhat-00001 Red Hat build of Apache Camel 4 for Quarkus 3 json-smart 2.6.0.redhat-00001 Red Hat build of Apache Camel for Spring Boot 4 json-smart 2.6.0.redhat-00001 Red Hat build of Apicurio Registry 3 json-smart 2.6.0.redhat-00001 Red Hat build of Debezium 3 json-smart 2.6.0.redhat-00001
    +1 more products
    Red Hat Data Grid 8 json-smart 2.6.0.redhat-00001
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Fuse 7 json-smart 2.6.0.redhat-00001
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenShift Dev Spaces devspaces/openvsx-rhel9, devspaces/pluginregistry-rhel9
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
20 d ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/netplex/json-smart-v2/issues/302 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 6.9 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
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA 4.0 6.9 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • json-smart json-smart

Classification

Weakness
  • CWE-147 Improper Neutralization of Input Terminators

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.