What is CVE-2021-47621?

CVE-2021-47621 is a high-severity vulnerability in N/a, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2024-06-21.

How severe is CVE-2021-47621?

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

XXE in N/a

CVE-2021-47621

ClassGraph before 4.8.112 was not resistant to XML eXternal Entity (XXE) attacks.

Vulnerability class: XXE (XML External Entity)

Published 2024-06-21 · 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: 0.006 (44.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Weakness classification (CWE)

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

References

Frequently asked questions

What is CVE-2021-47621?: CVE-2021-47621 is a high-severity vulnerability in N/a, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2024-06-21.
How severe is CVE-2021-47621?: High severity. CVSS v3 base score is 7.5 out of 10.