CVE-2026-67215

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.6% of scored records. A rank, not a probability.

NVD base score

8.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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

NVD analysis status

Analyzed. NVD last modified this record on 2026-10-23.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-07-29 13:32Z3 MO AGO

Last updated

2026-07-29 15:59Z3 MO AGO

Reserved

2026-07-28

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-674Uncontrolled RecursionClass
• CWE-770Allocation of Resources Without Limits or ThrottlingBase

Data version

5.2

Document digest

0d2cc77fe63a861fdbc3a70225eff661ddffe6f4197747e270fdada6a7cd72d1

• joshua.huSecurity vulnerabilities in the cJSON JSON parser (Joshua Rogers)https://joshua.hu/cjson-json-parser-cve-vulnerabilitiesexploit
• github.comcJSON_Delete unbounded recursion (cJSON.c)https://github.com/DaveGamble/cJSON/blob/v1.7.19/cJSON.c#L253-L261technical-description
• github.comapply_patch copy/add duplicate-and-graft (cJSON_Utils.c)https://github.com/DaveGamble/cJSON/blob/v1.7.19/cJSON_Utils.c#L906-L940technical-description
• www.vulncheck.comVulnCheck Advisory: cJSON JSON Patch copy/add Uncontrolled Recursion Stack Exhaustionhttps://www.vulncheck.com/advisories/cjson-json-patch-copy-add-uncontrolled-recursion-stack-exhaustionthird-party-advisory