CVE-2006-2973: Multiple SQL injection vulnerabilities in month.php in PHP Lite Calendar Express 2.2 allow remote attackers to

This month

HIGH 7.5DOWNGRADE

CVE-2006-2973 is a high-severity flaw (CVSS 7.5) affecting calendar express. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL injection vulnerabilities in month.php in PHP Lite Calendar Express 2.2 allow remote attackers to execute arbitrary SQL commands via the (1) catid and (2) cid parameter. NOTE: this might be a duplicate of CVE-2005-4009.c.

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	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-89
Published	2006-06-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php lite

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

Am I affected?

Timeline

2006-06-12 22:02 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

php lite calendar express DOWNGRADE

Affected: 2.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.2 (Debian / Ubuntu)

apt-cache madison calendar-express sudo apt install calendar-express=<VERSION_BEFORE_2.2> sudo apt-mark hold calendar-express

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

dnf --showduplicates list calendar-express sudo dnf downgrade calendar-express-<VERSION_BEFORE_2.2> sudo dnf versionlock add calendar-express

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: Calendar Express 2.2 - 'month.php' SQL Injection

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-2006-2973?

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

Is CVE-2006-2973 being exploited?

CVE-2006-2973 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-2006-2973 affect?

CVE-2006-2973 affects calendar express. Severity is high (CVSS 7.5). Multiple SQL injection vulnerabilities in month.php in PHP Lite Calendar Express 2.2 allow remote attackers to execute arbitrary SQL commands via the (1) catid and (2) cid parameter. NOTE: this might be a duplicate of CVE-2005-4009.c.

How urgent is CVE-2006-2973?

Priority 48/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-3627 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in PHP Lite Calendar Express 2.2 allow remote attackers to execute arbi
CVE-2006-1401 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in search.php in Calendar Express 2.2 allow remote attacke
CVE-2005-4009 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in PHP Lite Calendar Express 2.2 and earlier allow remote attackers to

References

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