CVE-2006-6228: Cross-site scripting (XSS) vulnerability in Codewalkers ltwCalendar (aka PHP Event Calendar) before 4.2.1 allo

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MEDIUM 6.8DOWNGRADE

CVE-2006-6228 is a medium-severity flaw (CVSS 6.8) affecting ltwcalendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in Codewalkers ltwCalendar (aka PHP Event Calendar) before 4.2.1 allows remote attackers to inject arbitrary HTML or web script via unknown vectors.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Published	2006-12-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: codewalkers

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-12-02 02:28 UTCPublished CVE record published
2026-06-16 22:32 UTCUpdated Record last modified

codewalkers ltwcalendar DOWNGRADE

Affected: 4.1.3 · 4.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1.3 (Debian / Ubuntu)

apt-cache madison ltwcalendar sudo apt install ltwcalendar=<VERSION_BEFORE_4.1.3> sudo apt-mark hold ltwcalendar

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ltwcalendar sudo dnf downgrade ltwcalendar-<VERSION_BEFORE_4.1.3> sudo dnf versionlock add ltwcalendar

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-2006-6228?

ltwcalendar: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-6228 being exploited?

CVE-2006-6228 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-2006-6228 affect?

CVE-2006-6228 affects ltwcalendar. Severity is medium (CVSS 6.8). Cross-site scripting (XSS) vulnerability in Codewalkers ltwCalendar (aka PHP Event Calendar) before 4.2.1 allows remote attackers to inject arbitrary HTML or web script via unknown vectors.

How urgent is CVE-2006-6228?

Priority 40/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-6229 MEDIUM 5.0 DOWNGRADE Codewalkers ltwCalendar (aka PHP Event Calendar) before 4.2.1 logs failed passwords, which might allow attacke
CVE-2006-3041 HIGH 7.5 DOWNGRADE PHP remote file inclusion vulnerability in Ltwcalendar/calendar.php in Codewalkers Ltwcalendar 4.1.3 allows re
CVE-2005-4011 HIGH 7.5 UPGRADE SQL injection vulnerability in calendar.php in Codewalkers ltwCalendar (aka PHP Event Calendar) 4.2, 4.1.3, an

References

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