How severe is CVE-2021-27908?

CVE-2021-27908 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2021-27908 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27908?

CVE-2021-27908 affects Acquia Mautic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27908?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27908 published?

CVE-2021-27908 was published on 2021-03-23 and last updated on 2026-06-17.

CVE-2021-27908

CVE-2021-27908 is a medium-severity vulnerability in Acquia Mautic with a CVSS 3.x base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 5.8)
CVSS v2: 2.1
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Acquia Mautic
Published: 2021-03-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2021-27908?: CVE-2021-27908 has a CVSS 3.x base score of 5.8, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2021-27908 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27908?: CVE-2021-27908 affects Acquia Mautic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27908?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27908 published?: CVE-2021-27908 was published on 2021-03-23 and last updated on 2026-06-17.

References

https://github.com/mautic/mautic/security/advisories/GHSA-4hjq-422q-4vpx

Affected products (1)

cpe:2.3:a:acquia:mautic:*:*:*:*:*:*:*:*

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