What is CVE-2021-27911?

CVE-2021-27911 is a high-severity vulnerability in Mautic, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2021-08-30.

How severe is CVE-2021-27911?

High severity. CVSS v3 base score is 8.3 out of 10.

XSS in Mautic

CVE-2021-27911

Mautic versions before 3.3.4/4.0.0 are vulnerable to an inline JS XSS attack through the contact's first or last name and triggered when viewing a contact's details page then clicking on the action drop down and hovering over the Campaigns…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (57.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Mautic — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/mautic/mautic/security/advisories/GHSA-72hm-fx78-xwhc (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27911?: CVE-2021-27911 is a high-severity vulnerability in Mautic, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2021-08-30.
How severe is CVE-2021-27911?: High severity. CVSS v3 base score is 8.3 out of 10.