CVE-2024-21727: XSS vulnerability in DP Calendar component for Joomla.

Routine

MEDIUM 6.1UPGRADE

CVE-2024-21727 is a medium-severity flaw (CVSS 6.1) affecting dpcalendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XSS vulnerability in DP Calendar component for Joomla.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-02-15
Last modified	2026-06-17

Publisher (CNA): Joomla! Project · Vendor: digital-peak

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

Am I affected?

Timeline

2024-02-15 07:15 UTCPublished CVE record published
2026-06-17 07:10 UTCUpdated Record last modified

digital-peak dpcalendar UPGRADE

Affected: >= 8.0.0 and <= 8.14.0

Fixed in: newer than 8.14.0

Safe to downgrade to: a release before 8.0.0

1. Check installed version

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

2. UPGRADE to newer than 8.14.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dpcalendar

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 8.0.0 (Debian / Ubuntu)

apt-cache madison dpcalendar sudo apt install dpcalendar=<VERSION_BEFORE_8.0.0> sudo apt-mark hold dpcalendar

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

dnf --showduplicates list dpcalendar sudo dnf downgrade dpcalendar-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add dpcalendar

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-2024-21727?

dpcalendar: upgrade to newer than 8.14.0. Exact commands for each OS are on this page.

Is CVE-2024-21727 being exploited?

CVE-2024-21727 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-2024-21727 affect?

CVE-2024-21727 affects dpcalendar. Severity is medium (CVSS 6.1). XSS vulnerability in DP Calendar component for Joomla.

How urgent is CVE-2024-21727?

Priority 27/100. No elevated risk signals yet.

Software pages

Joomla vulnerabilities

References

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