CVE-2021-27908
Mautic vulnerable to secret data exfiltration via symfony parameters
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2021-27908- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L - Weakness
- CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2021-0756
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.
- Record
EUVD-2021-0756- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4hjq-422q-4vpx
Mautic vulnerable to secret data exfiltration via symfony parameters
Impact
Symfony parameters (which is what Mautic transforms configuration parameters into) can be used within other Symfony parameters by design. However, this also means that an admin who is normally not privy to certain parameters, such as database credentials, could expose them by leveraging any of the free text fields in Mautic’s configuration that are used in publicly facing parts of the application.
For example,
- Go to Configuration page -> Landing Page Settings -> Analytics script and enter this: <
script> console.log("db password is: %mautic.db_password%"); </script> - Visit any landing page and open the JS dev console. You will see the following message with real instance db password:
db password is: <real password>
Risk rating: ModerateCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
Patches
Upgrade to 3.3.2
Workarounds
No
References
No
For more information
If you have any questions or comments about this advisory:
- Email us at [email protected]
- Record
GHSA-4hjq-422q-4vpx- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L - Weakness
- CWE-74, CWE-732
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-27908- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L - CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200, CWE-74
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-27908- CVSS 3.1
- 4.4 Medium
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-4hjq-422q-4vpx
Mautic vulnerable to secret data exfiltration via symfony parameters
Impact
Symfony parameters (which is what Mautic transforms configuration parameters into) can be used within other Symfony parameters by design. However, this also means that an admin who is normally not privy to certain parameters, such as database credentials, could expose them by leveraging any of the free text fields in Mautic’s configuration that are used in publicly facing parts of the application.
For example,
- Go to Configuration page -> Landing Page Settings -> Analytics script and enter this: <
script> console.log("db password is: %mautic.db_password%"); </script> - Visit any landing page and open the JS dev console. You will see the following message with real instance db password:
db password is: <real password>
Risk rating: ModerateCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
Patches
Upgrade to 3.3.2
Workarounds
No
References
No
For more information
If you have any questions or comments about this advisory:
- Email us at [email protected]
- Record
GHSA-4hjq-422q-4vpx- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L - Weakness
- CWE-732, CWE-74
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mautic/corePackagist |
before 3.3.2 | 3.3.2 |
mautic/corePackagist |
before 3.3.2, plus listed versions 1.0.01.0.0-beta1.0.0-beta21.0.0-beta31.0.0-beta4 Show 45 moreShow less1.0.0-rc11.0.0-rc21.0.0-rc31.0.0-rc41.0.11.0.21.0.31.0.41.0.51.1.01.1.11.1.21.1.31.2.01.2.0-beta11.2.11.2.21.2.31.2.41.3.01.3.11.4.01.4.12.0.02.0.12.1.02.1.12.10.02.10.0-beta2.10.12.11.02.11.0-beta2.12.02.12.0-beta2.12.12.12.1-beta2.12.22.12.2-beta2.13.02.13.0-beta2.13.12.14.02.14.0-beta2.14.12.14.1-beta |
3.3.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27908 is a medium vulnerability (CVSS 5.8) in Acquia Mautic, published March 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 28th percentile. Fixed in mautic/core 3.3.2.
References
Left out here: 63 versions. The JSON record has them.