XSS in C-ares_project C-ares

CVE-2021-3672

A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.026 (83.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-3672?
CVE-2021-3672 is a medium-severity vulnerability in C-ares_project C-ares, classified under Cross-site Scripting. CVSS score: 5.6/10. Published 2021-11-23.
How severe is CVE-2021-3672?
Medium severity. CVSS v3 base score is 5.6 out of 10.