What is CVE-2021-27908?

CVE-2021-27908 is a medium-severity vulnerability in Acquia Mautic, classified under Information Disclosure. CVSS score: 5.8/10. Published 2021-03-23.

How severe is CVE-2021-27908?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Information disclosure in Acquia Mautic

CVE-2021-27908

In all versions prior to Mautic 3.3.2, secret parameters such as database credentials could be exposed publicly by an authorized admin user through leveraging Symfony parameter syntax in any of the free text fields in Mautic’s configuration that are used in publicly facing parts of the application.

Vulnerability class: Information Disclosure

Published 2021-03-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.003 (25.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Acquia Mautic
Mautic — versions unspecified

Weakness classification (CWE)

References

github.com/mautic/mautic/security/advisories/GHSA-4hjq-422q-4vpx (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27908?: CVE-2021-27908 is a medium-severity vulnerability in Acquia Mautic, classified under Information Disclosure. CVSS score: 5.8/10. Published 2021-03-23.
How severe is CVE-2021-27908?: Medium severity. CVSS v3 base score is 5.8 out of 10.