CVE-2018-12680 json
CoAPthon DoS due to Exceptions
published 2019-04-02 7 y ago modified 2026-06-17 4 mo ago also GHSA-5xc6-fpc7-4qvg , PYSEC-2019-165 , EUVD-2019-0028
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
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.
Exploit prediction
1.50% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Tanganelli/CoAPthon/issues/135 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| GitHub | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | coapthon | <=4.0.2 >=3.1 |
no fix listed |
Classification
References
-
github.com
/Tanganelli/CoAPthon/issues/135
web, exploit, issue-tracking, third-party-advisory, report
-
nvd.nist.gov
/vuln/detail/CVE-2018-12680
advisory
-
github.com
/Tanganelli/CoAPthon
package
-
github.com
/advisories/GHSA-5xc6-fpc7-4qvg
advisory
-
github.com
/pypa/advisory-database/tree/main/vulns/coapthon/PYSEC-2019-165.yaml
web
Sources
- CVE List CVE-2018-12680
- GitHub Advisory GHSA-5xc6-fpc7-4qvg
- NVD CVE-2018-12680
- OSV PYSEC-2019-165
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.