CVE-2021-31718 json
The server in npupnp before 4.1.4 is affected by DNS rebinding in the embedded web server (including UPnP SOAP and GENA endpoints), leading…
published 2021-04-25 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-18602
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
The server in npupnp before 4.1.4 is affected by DNS rebinding in the embedded web server (including UPnP SOAP and GENA endpoints), leading to remote code execution.
Patch / fix
- npupnp_project npupnp 4.1.4
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-346 Origin Validation Error
References
-
framagit.org
/medoc92/npupnp
third-party-advisory
-
lesbonscomptes.com
/upmpdcli/npupnp-doc/libnpupnp.html
third-party-advisory
-
openwall.com
/lists/oss-security/2021/04/25/2
mailing-list, third-party-advisory
Sources
- CVE List CVE-2021-31718
- NVD CVE-2021-31718
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.