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Vulnerability record · CVE-2019-11834 · published 9 May 2019

CVE-2019-11834: Davegamble cjson out-of-bounds read vulnerability

DDavegamble · Cjson

cJSON before 1.7.11 allows out-of-bounds access, related to \x00 in a string literal.

9.8 CVSS 3.1 Critical EPSS 2.5% · top 15.8% CWE-125 · Out-of-bounds readCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

cJSON before 1.7.11 allows out-of-bounds access, related to \x00 in a string literal.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/DaveGamble/cJSON/compare/c69134d...93688cb PatchThird Party Advisory
https://github.com/DaveGamble/cJSON/issues/337 ExploitThird Party Advisory
https://github.com/DaveGamble/cJSON/releases/tag/v1.7.11 Release NotesThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory
https://github.com/DaveGamble/cJSON/compare/c69134d...93688cb PatchThird Party Advisory
https://github.com/DaveGamble/cJSON/issues/337 ExploitThird Party Advisory
https://github.com/DaveGamble/cJSON/releases/tag/v1.7.11 Release NotesThird Party Advisory
https://www.oracle.com/security-alerts/cpuoct2020.html PatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-11834), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.