CVE-2006-3843: PHP remote file inclusion vulnerability in com_calendar.php in Calendar Mambo Module 1.5.7 and earlier allows

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HIGH 7.5DOWNGRADE

CVE-2006-3843 is a high-severity flaw (CVSS 7.5) affecting mambo calendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in com_calendar.php in Calendar Mambo Module 1.5.7 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the absolute_path parameter.

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	2.6% (top 15%)
CISA exploited list	No
Published	2006-07-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mambo

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

Am I affected?

Timeline

2006-07-25 23:04 UTCPublished CVE record published
2026-06-16 22:27 UTCUpdated Record last modified

mambo mambo calendar DOWNGRADE

Affected: 1.5.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.7

1. Check installed version

apt-cache policy mambo-calendar || rpm -q mambo-calendar || mambo-calendar --version

2. No fixed release: DOWNGRADE to a release before 1.5.7 (Debian / Ubuntu)

apt-cache madison mambo-calendar sudo apt install mambo-calendar=<VERSION_BEFORE_1.5.7> sudo apt-mark hold mambo-calendar

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

dnf --showduplicates list mambo-calendar sudo dnf downgrade mambo-calendar-<VERSION_BEFORE_1.5.7> sudo dnf versionlock add mambo-calendar

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: Mambo Module Calendar 1.5.7 - 'Com_Calendar.php' 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-2006-3843?

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

Is CVE-2006-3843 being exploited?

CVE-2006-3843 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-2006-3843 affect?

CVE-2006-3843 affects mambo calendar. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in com_calendar.php in Calendar Mambo Module 1.5.7 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the absolute_path parameter.

How urgent is CVE-2006-3843?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-2049 MEDIUM 6.8 DOWNGRADE Multiple PHP remote file inclusion vulnerabilities in the Calendar Module (com_calendar) 1.5.5 for Mambo allow

References

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