What is CVE-2020-8156?

CVE-2020-8156 is a high-severity vulnerability in Nextcloud Mail, classified under Improper Certificate Validation. CVSS score: 7.0/10. Published 2020-05-12.

How severe is CVE-2020-8156?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Nextcloud Mail

CVE-2020-8156

A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.

Vulnerability class: Improper Certificate Validation

EPSS: 0.009 (56.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L.

Affected products

Nextcloud Mail
Fedoraproject Fedora — versions 32
N/a Nextcloud Mail — versions 1.1.4

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

support@hackerone.com (x_refsource_MISC, Vendor Advisory)
support@hackerone.com (x_refsource_FEDORA, vendor-advisory)

Frequently asked questions

What is CVE-2020-8156?: CVE-2020-8156 is a high-severity vulnerability in Nextcloud Mail, classified under Improper Certificate Validation. CVSS score: 7.0/10. Published 2020-05-12.
How severe is CVE-2020-8156?: High severity. CVSS v3 base score is 7.0 out of 10.