What is CVE-2021-27909?

CVE-2021-27909 is a medium-severity vulnerability in Mautic, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2021-08-30.

How severe is CVE-2021-27909?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2021-27909 known to be exploited?

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

XSS in Mautic

CVE-2021-27909

For Mautic versions prior to 3.3.4/4.0.0, there is an XSS vulnerability on Mautic's password reset page where a vulnerable parameter, "bundle," in the URL could allow an attacker to execute Javascript code. The attacker would be required t…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.187 (95.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

Mautic — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

github.com/mautic/mautic/security/advisories/GHSA-32hw-3pvh-vcvc (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27909?: CVE-2021-27909 is a medium-severity vulnerability in Mautic, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2021-08-30.
How severe is CVE-2021-27909?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2021-27909 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.