cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a"…
Priority MEDIUM 48CWE-440Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00234 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Deferred Red Hat: fix deferred
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| cJSON Project | cJSON | 1.7.15 | — | No fix listed | CNA |
- cJSON VendorcJSON Project Affected 1.7.15 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cjson_project:cjson:1.7.15:*:*:*:*:*:*:* | 1.7.15 | Vulnerable | cJSON Project |
- cpe:2.3:a:cjson_project:cjson:1.7.15:*:*:*:*:*:*:* Versions 1.7.15 Vulnerable ·cJSON Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-26819
- 2026-10-03 Alias added: GHSA-whx8-2789-8w4w
References
More cJSON Project Cjson vulnerabilities
- TI-2024-20921 cJSON v1.7.17 was discovered to contain a segmentation violation, which can trigger… CVSS 3.1HIGH 7.6
- TI-2023-29450 Out-of-bounds read in cJSON CVSS 3.1MEDIUM 5.5
Sources
- CVE-2023-26819 · CVE Program
- CVE-2023-26819 · NVD
- FIRST EPSS
- GHSA-whx8-2789-8w4w · GitHub Advisory Database · CC BY 4.0
- CVE-2023-26819 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences