CVE-2006-6812: Multiple PHP remote file inclusion vulnerabilities in myPHPCalendar 10.1 allow remote attackers to execute arb

This month

HIGH 7.5DOWNGRADE

CVE-2006-6812 is a high-severity flaw (CVSS 7.5) affecting myphpcalendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple PHP remote file inclusion vulnerabilities in myPHPCalendar 10.1 allow remote attackers to execute arbitrary PHP code via a URL in the cal_dir parameter to (1) admin.php, (2) contacts.php, or (3) convert-date.php.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2006-12-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: myphpcalendar

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

Am I affected?

Timeline

2006-12-29 11:28 UTCPublished CVE record published
2026-06-16 22:33 UTCUpdated Record last modified

myphpcalendar myphpcalendar DOWNGRADE

Affected: 10.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 10.1 (Debian / Ubuntu)

apt-cache madison myphpcalendar sudo apt install myphpcalendar=<VERSION_BEFORE_10.1> sudo apt-mark hold myphpcalendar

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

dnf --showduplicates list myphpcalendar sudo dnf downgrade myphpcalendar-<VERSION_BEFORE_10.1> sudo dnf versionlock add myphpcalendar

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: myPHPCalendar 10192000b - 'cal_dir' Remote File Inclusion

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-2006-6812?

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

Is CVE-2006-6812 being exploited?

CVE-2006-6812 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-2006-6812 affect?

CVE-2006-6812 affects myphpcalendar. Severity is high (CVSS 7.5). Multiple PHP remote file inclusion vulnerabilities in myPHPCalendar 10.1 allow remote attackers to execute arbitrary PHP code via a URL in the cal_dir parameter to (1) admin.php, (2) contacts.php, or (3) convert-date.php.

How urgent is CVE-2006-6812?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

References

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