CVE-2026-87933Proof of concept (PoC) published · CISASuited to automated attack · CISA

DaveGamble cJSON cJSON_Utils.c cJSONUtils_MergePatch use after free

CVSS score

6.9

EPSS probability

%0.5

Risk score

0.0

Published

1 mo ago

Vulnerability Timeline (Change History)

CVE-2026-87933 historical changes made to the vulnerability by NVD, CISA and MITRE:

Date	Actor / Source	Action / Description	Type	Previous value	New value
10.09.2026	nvd@nist.gov	Initial Analysis & CVSS Vector Assignment	CVSS V3.1	—	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
10.09.2026	CISA Coordinator	SSVC Risk Re-assessment	SSVC / KEV	exploitation: none	exploitation: none
10.09.2026	MITRE / NVD	New CVE Record Received & Ingested	CVE Created	—	CVE-2026-87933

7.5

Patch verified Public Exploits:1EPSS %12 mo ago

7.5

Patch verified Public Exploits:1EPSS %12 mo ago

8.7

Patch status unknownEPSS %02 mo ago

5.3

Patch verified Public Exploits:1EPSS %02 mo ago

7.8

Patch verifiedEPSS %02 mo ago

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

curl -H "x-api-key: $DAYBREACH_API_KEY" \
  "https://api.daybreach.dev/api/v1/intel/cves/CVE-2026-87933"