CVE-2021-27916: Prior to the patched version, logged in users of Mautic are vulnerable to Relative Path Traversal/Arbitrary Fi

This month

HIGH 8.1UPGRADE

CVE-2021-27916 is a high-severity flaw (CVSS 8.1) affecting mautic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Prior to the patched version, logged in users of Mautic are vulnerable to Relative Path Traversal/Arbitrary File Deletion. Regardless of the level of access the Mautic user had, they could delete files other than those in the media folders such as system files, libraries or other important files. This vulnerability exists in the implementation of the GrapesJS builder in Mautic.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-22
Published	2024-09-17
Last modified	2026-06-17

Publisher (CNA): Mautic · Vendor: acquia

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-09-17 15:15 UTCPublished CVE record published
2026-06-17 03:45 UTCUpdated Record last modified

acquia mautic UPGRADE

Affected: >= 3.3.0 and < 4.4.12 · >= 5.0.0 and < 5.0.4

Fixed in: 4.4.12, 5.0.4

Safe to downgrade to: a release before 3.3.0

1. Check installed version

apt-cache policy mautic || rpm -q mautic || mautic --version

2. UPGRADE to 4.4.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mautic

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mautic

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.3.0 (Debian / Ubuntu)

apt-cache madison mautic sudo apt install mautic=<VERSION_BEFORE_3.3.0> sudo apt-mark hold mautic

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mautic sudo dnf downgrade mautic-<VERSION_BEFORE_3.3.0> sudo dnf versionlock add mautic

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-27916?

mautic: upgrade to 4.4.12, 5.0.4. Exact commands for each OS are on this page.

Is CVE-2021-27916 being exploited?

CVE-2021-27916 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-27916 affect?

CVE-2021-27916 affects mautic. Severity is high (CVSS 8.1). Prior to the patched version, logged in users of Mautic are vulnerable to Relative Path Traversal/Arbitrary File Deletion. Regardless of the level of access the Mautic user had, they could delete files other than those in the media folders

How urgent is CVE-2021-27916?

Priority 42/100. High severity

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References

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