What is CVE-2020-23079?

CVE-2020-23079 is a high-severity vulnerability in Halo, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2021-07-12.

How severe is CVE-2020-23079?

High severity. CVSS v3 base score is 7.5 out of 10.

SSRF in Halo

CVE-2020-23079

SSRF vulnerability in Halo <=1.3.2 exists in the SMTP configuration, which can detect the server intranet.

Vulnerability class: SSRF (Server-Side Request Forgery)

Published 2021-07-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.012 (68.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Halo

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

github.com/halo-dev/halo/issues/806 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-23079?: CVE-2020-23079 is a high-severity vulnerability in Halo, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2021-07-12.
How severe is CVE-2020-23079?: High severity. CVSS v3 base score is 7.5 out of 10.