CVE-2021-25893: Magnolia CMS from 6.1.3 to 6.2.3 contains a stored cross-site scripting (XSS) vulnerability in the setText par

Routine

MEDIUM 5.4UPGRADE

CVE-2021-25893 is a medium-severity flaw (CVSS 5.4) affecting magnolia cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Magnolia CMS from 6.1.3 to 6.2.3 contains a stored cross-site scripting (XSS) vulnerability in the setText parameter of /magnoliaAuthor/.magnolia/.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-04-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: magnolia-cms

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

Am I affected?

Timeline

2021-04-02 12:15 UTCPublished CVE record published
2026-06-17 03:42 UTCUpdated Record last modified

magnolia-cms magnolia cms UPGRADE

Affected: >= 6.1.3 and < 6.1.7 · >= 6.2.3 and < 6.2.4

Fixed in: 6.1.7, 6.2.4

Safe to downgrade to: a release before 6.1.3

1. Check installed version

apt-cache policy magnolia-cms || rpm -q magnolia-cms || magnolia-cms --version

2. UPGRADE to 6.1.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade magnolia-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade magnolia-cms

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 6.1.3 (Debian / Ubuntu)

apt-cache madison magnolia-cms sudo apt install magnolia-cms=<VERSION_BEFORE_6.1.3> sudo apt-mark hold magnolia-cms

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

dnf --showduplicates list magnolia-cms sudo dnf downgrade magnolia-cms-<VERSION_BEFORE_6.1.3> sudo dnf versionlock add magnolia-cms

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-2021-25893?

magnolia cms: upgrade to 6.1.7, 6.2.4. Exact commands for each OS are on this page.

Is CVE-2021-25893 being exploited?

CVE-2021-25893 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-2021-25893 affect?

CVE-2021-25893 affects magnolia cms. Severity is medium (CVSS 5.4). Magnolia CMS from 6.1.3 to 6.2.3 contains a stored cross-site scripting (XSS) vulnerability in the setText parameter of /magnoliaAuthor/.magnolia/.

How urgent is CVE-2021-25893?

Priority 39/100. Public exploit reference

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References

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