CVE-2009-4336: Cross-site scripting (XSS) vulnerability in the Diocese of Portsmouth Calendar (pd_calendar) extension 0.4.1 a

Q: How do I fix CVE-2009-4336?

pd calendar today: upgrade to newer than 0.4.1. Exact commands for each OS are on this page.

Q: Is CVE-2009-4336 being exploited?

CVE-2009-4336 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2009-4336 affect?

CVE-2009-4336 affects pd calendar today. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the Diocese of Portsmouth Calendar (pd_calendar) extension 0.4.1 and earlier for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Q: How urgent is CVE-2009-4336?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2009-4336 is a medium-severity flaw (CVSS 4.3) affecting pd calendar today. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in the Diocese of Portsmouth Calendar (pd_calendar) extension 0.4.1 and earlier for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-79
Published	2009-12-17
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: simon rundell

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

Am I affected?

Timeline

2009-12-17 17:30 UTCPublished CVE record published
2026-06-16 23:13 UTCUpdated Record last modified

simon rundell pd calendar today UPGRADE

Affected: <= 0.4.1 · 0.0.3

Fixed in: newer than 0.4.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy pd-calendar-today || rpm -q pd-calendar-today || pd-calendar-today --version

2. UPGRADE to newer than 0.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade pd-calendar-today

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pd-calendar-today

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2009-4336?

pd calendar today: upgrade to newer than 0.4.1. Exact commands for each OS are on this page.

Is CVE-2009-4336 being exploited?

CVE-2009-4336 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-2009-4336 affect?

CVE-2009-4336 affects pd calendar today. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in the Diocese of Portsmouth Calendar (pd_calendar) extension 0.4.1 and earlier for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

How urgent is CVE-2009-4336?

Priority 31/100. No elevated risk signals yet.

Software pages

TYPO3 vulnerabilities

Related CVEs

CVE-2009-4337 HIGH 7.5 UPGRADE SQL injection vulnerability in the Diocese of Portsmouth Calendar (pd_calendar) extension 0.4.1 and earlier fo
CVE-2008-6691 HIGH 7.5 DOWNGRADE SQL injection vulnerability in Diocese of Portsmouth Calendar Today (pd_calendar_today) extension 0.0.3 for TY

References

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