What is CVE-2020-19954?

CVE-2020-19954 is a high-severity vulnerability in S-Cms, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2021-10-14.

How severe is CVE-2020-19954?

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

XXE in S-Cms

CVE-2020-19954

An XML External Entity (XXE) vulnerability was discovered in /api/notify.php in S-CMS 3.0 which allows attackers to read arbitrary files.

Vulnerability class: XXE (XML External Entity)

Published 2021-10-14 · 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 2026-09-30.

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

S-Cms — versions 3.0

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

github.com/zhuxianjin/vuln_repo/blob/master/S-CMS v3.0 XXE Arbitrary File Read… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-19954?: CVE-2020-19954 is a high-severity vulnerability in S-Cms, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2021-10-14.
How severe is CVE-2020-19954?: High severity. CVSS v3 base score is 7.5 out of 10.