What is CVE-2020-10807?

CVE-2020-10807 is a medium-severity vulnerability in Mitre Caldera, classified under Authentication Bypass by Spoofing. CVSS score: 5.3/10. Published 2020-03-22.

How severe is CVE-2020-10807?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Mitre Caldera

CVE-2020-10807

auth_svc in Caldera before 2.6.5 allows authentication bypass (for REST API requests) via a forged "localhost" string in the HTTP Host header.

Published 2020-03-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Mitre Caldera

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

github.com/mitre/caldera/issues/1405 (Third Party Advisory)
github.com/mitre/caldera/pull/1407 (Patch, Third Party Advisory)
github.com/mitre/caldera/compare/2.6.4...2.6.5 (Third Party Advisory)
github.com/mitre/caldera/releases/tag/2.6.5 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2020-10807?: CVE-2020-10807 is a medium-severity vulnerability in Mitre Caldera, classified under Authentication Bypass by Spoofing. CVSS score: 5.3/10. Published 2020-03-22.
How severe is CVE-2020-10807?: Medium severity. CVSS v3 base score is 5.3 out of 10.