The Serialize.deserialize() method in CoAPthon 3.1, 4.0.0, 4.0.1, and 4.0.2 mishandles…
Priority LOW 36CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution, Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-502 and CWE-400.
Summary
The Serialize.deserialize() method in CoAPthon 3.1, 4.0.0, 4.0.1, and 4.0.2 mishandles certain exceptions, leading to a denial of service in applications that use this library (e.g., the standard CoAP server, CoAP client, CoAP reverse proxy, example collect CoAP server and client) when they receive crafted CoAP messages.
Why it matters now
EPSS 0.01503 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | CoAPthon (PyPI) | up to 4.0.2 | — | No fix listed | GHSA-5xc6-fpc7-4qvg |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- CoAPthon (PyPI) Vendor— Affected up to 4.0.2 Fixed in — No fix listed GHSA-5xc6-fpc7-4qvg
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:coapthon_project:coapthon:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | Coapthon Project |
| cpe:2.3:a:coapthon_project:coapthon:4.0.0:*:*:*:*:*:*:* | 4.0.0 | Vulnerable | Coapthon Project |
| cpe:2.3:a:coapthon_project:coapthon:4.0.1:*:*:*:*:*:*:* | 4.0.1 | Vulnerable | Coapthon Project |
| cpe:2.3:a:coapthon_project:coapthon:4.0.2:*:*:*:*:*:*:* | 4.0.2 | Vulnerable | Coapthon Project |
- cpe:2.3:a:coapthon_project:coapthon:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Coapthon Project
- cpe:2.3:a:coapthon_project:coapthon:4.0.0:*:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Coapthon Project
- cpe:2.3:a:coapthon_project:coapthon:4.0.1:*:*:*:*:*:*:* Versions 4.0.1 Vulnerable ·Coapthon Project
- cpe:2.3:a:coapthon_project:coapthon:4.0.2:*:*:*:*:*:*:* Versions 4.0.2 Vulnerable ·Coapthon Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12680
- 2026-10-03 Alias added: GHSA-5xc6-fpc7-4qvg
References
Sources
- CVE-2018-12680 · CVE Program
- CVE-2018-12680 · NVD
- FIRST EPSS
- GHSA-5xc6-fpc7-4qvg · GitHub Advisory Database · CC BY 4.0
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