HCL Unica Platform is vulnerable to XML External Entity (XXE) injection

published 2022-05-12 4y ago modified 2026-06-17 4mo ago also EUVD-2021-14518

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.

Patch / fix

fixed in 1

hcltech unica 12.1.1

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Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

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

Affected products

HCL Software HCL Unica

Classification

Weakness

CWE-91 XML Injection
CWE-611 Improper Restriction of XML External Entity Reference

References

support.hcltechsw.com /csm?id=kb_article&sysparm_article=KB0097124
vendor-advisory

Sources

CVE List CVE-2021-27777
NVD CVE-2021-27777

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