What is CVE-2021-41042?

CVE-2021-41042 is a medium-severity vulnerability in Eclipse Lyo, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.3/10. Published 2022-07-07.

How severe is CVE-2021-41042?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-41042 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XXE in Eclipse Lyo

CVE-2021-41042

In Eclipse Lyo versions 1.0.0 to 4.1.0, a TransformerFactory is initialized with the defaults that do not restrict DTD loading when working with RDF/XML. This allows an attacker to cause an external DTD to be retrieved.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.010 (57.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Eclipse Lyo
The Eclipse Foundation Lyo — versions 1.0.0, unspecified

Weakness classification (CWE)

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

Public proof-of-concept exploits

References

emo@eclipse.org (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2021-41042?: CVE-2021-41042 is a medium-severity vulnerability in Eclipse Lyo, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.3/10. Published 2022-07-07.
How severe is CVE-2021-41042?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-41042 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.