What is CVE-2021-38555?

CVE-2021-38555 is a critical-severity vulnerability in Apache Any23, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.1/10. Published 2021-09-11.

How severe is CVE-2021-38555?

Critical severity. CVSS v3 base score is 9.1 out of 10.

XXE in Apache Any23

CVE-2021-38555

An XML external entity (XXE) injection vulnerability was discovered in the Any23 StreamUtils.java file and is known to affect Any23 versions < 2.5. XML external entity injection (also known as XXE) is a web security vulnerability that allows an attacker to interfere with an application's processing of XML data. It often allows an attacker to view files on the application server filesystem, and to interact with any back-end or external systems that the application itself can access.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.028 (84.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Apache Any23
Apache Software Foundation Any23 — versions Apache Any23

Weakness classification (CWE)

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

References

security@apache.org (Mailing List, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-38555?: CVE-2021-38555 is a critical-severity vulnerability in Apache Any23, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.1/10. Published 2021-09-11.
How severe is CVE-2021-38555?: Critical severity. CVSS v3 base score is 9.1 out of 10.