What is CVE-2021-27777?

CVE-2021-27777 is a high-severity vulnerability in Hcl Software Unica, classified under XML Injection (Blind XPath Injection). CVSS score: 7.5/10. Published 2022-05-12.

How severe is CVE-2021-27777?

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

XPath Injection in Hcl Software Unica

CVE-2021-27777

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.

EPSS: 0.008 (52.5th percentile) — read the EPSS interpretation.

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:N/I:H/A:N.

Affected products

Hcl Software Unica — versions 12 and below
Hcltech Unica

Weakness classification (CWE)

CWE-91 — XML Injection (Blind XPath Injection)
CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

psirt@hcl.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-27777?: CVE-2021-27777 is a high-severity vulnerability in Hcl Software Unica, classified under XML Injection (Blind XPath Injection). CVSS score: 7.5/10. Published 2022-05-12.
How severe is CVE-2021-27777?: High severity. CVSS v3 base score is 7.5 out of 10.