CVE-2021-27777

7.5 highEPSS 0.8%

High (7.5) in hcltech unica. EPSS 0.8% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWEs: CWE-611, CWE-91
Published: 2022-05-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

hcltech:unica

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097124
https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0097124

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