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Fencer Intel
high 7.5

CVE-2020-19954 json

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

published 5y ago modified 4mo ago also EUVD-2020-11850

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

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

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Exploit prediction

1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/zhuxianjin/vuln_repo/blob/master/S-CMS%20v3.0%20XXE%20Arbitrary%20File%20Read%20Vulnerability.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-611 Improper Restriction of XML External Entity Reference

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.