CVE-2014-8325: The Calendar Base (cal) extension before 1.5.9 and 1.6.x before 1.6.1 for TYPO3 allows remote attackers to cau

Q: How do I fix CVE-2014-8325?

calender base: upgrade to newer than 1.5.8. Exact commands for each OS are on this page.

Q: Is CVE-2014-8325 being exploited?

CVE-2014-8325 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-2014-8325 affect?

CVE-2014-8325 affects calender base. Severity is high (CVSS 7.8). The Calendar Base (cal) extension before 1.5.9 and 1.6.x before 1.6.1 for TYPO3 allows remote attackers to cause a denial of service (resource consumption) via vectors related to the PHP PCRE library.

This month

HIGH 7.8UPGRADE

CVE-2014-8325 is a high-severity flaw (CVSS 7.8) affecting calender base. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Calendar Base (cal) extension before 1.5.9 and 1.6.x before 1.6.1 for TYPO3 allows remote attackers to cause a denial of service (resource consumption) via vectors related to the PHP PCRE library.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-399
Published	2014-10-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: calender base project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2014-10-22 14:55 UTCPublished CVE record published
2026-06-17 00:16 UTCUpdated Record last modified

calender base project calender base UPGRADE

Affected: <= 1.5.8 · 1.5.0 · 1.5.1 · 1.5.2 · 1.5.3 · 1.5.4 · 1.5.5 · 1.5.6

Fixed in: newer than 1.5.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy calender-base || rpm -q calender-base || calender-base --version

2. UPGRADE to newer than 1.5.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade calender-base

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade calender-base

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-2014-8325?

calender base: upgrade to newer than 1.5.8. Exact commands for each OS are on this page.

Is CVE-2014-8325 being exploited?

CVE-2014-8325 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-2014-8325 affect?

CVE-2014-8325 affects calender base. Severity is high (CVSS 7.8). The Calendar Base (cal) extension before 1.5.9 and 1.6.x before 1.6.1 for TYPO3 allows remote attackers to cause a denial of service (resource consumption) via vectors related to the PHP PCRE library.

How urgent is CVE-2014-8325?

Priority 47/100. High severity

Software pages

PHP vulnerabilities · TYPO3 vulnerabilities

References

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