CVE-2026-49048: The Joomla extension JoomCCK exposes a front-end controller task, that builds two SQL statements by directly c

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CRITICAL 9.8REMOTEUPGRADE

CVE-2026-49048 is a critical-severity flaw (CVSS 9.8) affecting joomcck. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Joomla extension JoomCCK exposes a front-end controller task, that builds two SQL statements by directly concatenating a user-supplied request parameter into the query string without escaping or parameterisation.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-06-28
Last modified	2026-10-25

Publisher (CNA): Joomla! Project · Vendor: joomcoder

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-28 19:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

joomcoder joomcck UPGRADE

Affected: >= 1.0 and <= 6.4.0

Fixed in: newer than 6.4.0

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. UPGRADE to newer than 6.4.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade joomcck

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 1.0 (Debian / Ubuntu)

apt-cache madison joomcck sudo apt install joomcck=<VERSION_BEFORE_1.0> sudo apt-mark hold joomcck

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

dnf --showduplicates list joomcck sudo dnf downgrade joomcck-<VERSION_BEFORE_1.0> sudo dnf versionlock add joomcck

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-2026-49048?

joomcck: upgrade to newer than 6.4.0. Exact commands for each OS are on this page.

Is CVE-2026-49048 being exploited?

CVE-2026-49048 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-2026-49048 affect?

CVE-2026-49048 affects joomcck. Severity is critical (CVSS 9.8). The Joomla extension JoomCCK exposes a front-end controller task, that builds two SQL statements by directly concatenating a user-supplied request parameter into the query string without escaping or parameterisation.

How urgent is CVE-2026-49048?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Joomla vulnerabilities

References

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