CVE-2021-31702

HIGH 7.5CVE-2021-31702 · Published 29/05/2021 · updated 17/06/2026

In short

CVE-2021-31702 is a HIGH (CVSS 7.5) vulnerability affecting ichris (frontiersoftware).
Chance of exploitation in the next 30 days (EPSS): 1.2%, higher than 69.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
ichris frontiersoftware	`≤ 5.18`	No fix yet

Description

Frontier ichris through 5.18 mishandles making a DNS request for the hostname in the HTTP Host header, as demonstrated by submitting 127.0.0.1 multiple times for DoS.

References

l00neyhacker/CVE-2021-31702 · Exploit

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