High 7.3Published Sep 10, 2026

CVE-2026-87933DaveGamble cJSON cJSON_Utils.c cJSONUtils_MergePatch use after free

Updated under an hour ago (2026-10-19 10:20 UTC)

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Every CVE for DaveGamble cJSON

Exploited in the last 30 days

A vulnerability was found in DaveGamble cJSON up to 1.7.19. The affected element is the function cJSONUtils_MergePatch of the file cJSON_Utils.c. The manipulation results in use after free. The attack may be launched remotely. The exploit has been made public and could be used. The pull request to fix this issue awaits acceptance.

CVSS: 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Weakness (CWE): CWE-416, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

DaveGamble cJSON davegamble:cjson	1.7.0; 1.7.1; 1.7.2; 1.7.3; 1.7.4; 1.7.5; 1.7.6; 1.7.7; and 12 more ranges	CNA record

References

https://vuldb.com/vuln/401815vdb-entry, technical-description
https://vuldb.com/vuln/401815/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-87933third-party-advisory
https://vuldb.com/submit/911136third-party-advisory
https://github.com/DaveGamble/cJSON/issues/1060exploit, issue-tracking
https://github.com/DaveGamble/cJSON/pull/1065issue-tracking, patch
https://github.com/DaveGamble/cJSON/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.