CVE-2008-5967: admin/index.php in PHP iCalendar 2.3.4, 2.24, and earlier does not require administrative authentication for a

Q: How do I fix CVE-2008-5967?

phpicalendar: upgrade to newer than 2.3.4. Exact commands for each OS are on this page.

Q: Is CVE-2008-5967 being exploited?

CVE-2008-5967 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-2008-5967 affect?

CVE-2008-5967 affects phpicalendar. Severity is high (CVSS 7.5). admin/index.php in PHP iCalendar 2.3.4, 2.24, and earlier does not require administrative authentication for an addupdate action, which allows remote attackers to upload a calendar (aka .ics) file with arbitrary content to the calendars/ di

Q: How urgent is CVE-2008-5967?

Priority 53/100. High severity; Public exploit reference

This month

HIGH 7.5UPGRADE

CVE-2008-5967 is a high-severity flaw (CVSS 7.5) affecting phpicalendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

admin/index.php in PHP iCalendar 2.3.4, 2.24, and earlier does not require administrative authentication for an addupdate action, which allows remote attackers to upload a calendar (aka .ics) file with arbitrary content to the calendars/ directory outside the web root.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.3% (top 11%)
CISA exploited list	No
Weakness	CWE-287
Published	2009-01-26
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpicalendar

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

Am I affected?

Timeline

2009-01-26 20:30 UTCPublished CVE record published
2026-06-16 23:01 UTCUpdated Record last modified

phpicalendar phpicalendar UPGRADE

Affected: <= 2.3.4 · 0.7 · 0.8 · 0.9 · 0.9.5 · 1.0 · 1.1 · 2.0 beta

Fixed in: newer than 2.3.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.3.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade phpicalendar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade phpicalendar

Note

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

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: PHP iCalendar 2.24 - 'cookie_language' Local File Inclusion / Arbitrary File Upload

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-2008-5967?

phpicalendar: upgrade to newer than 2.3.4. Exact commands for each OS are on this page.

Is CVE-2008-5967 being exploited?

CVE-2008-5967 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-2008-5967 affect?

CVE-2008-5967 affects phpicalendar. Severity is high (CVSS 7.5). admin/index.php in PHP iCalendar 2.3.4, 2.24, and earlier does not require administrative authentication for an addupdate action, which allows remote attackers to upload a calendar (aka .ics) file with arbitrary content to the calendars/ di

How urgent is CVE-2008-5967?

Priority 53/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-5968 HIGH 7.5 UPGRADE Directory traversal vulnerability in print.php in PHP iCalendar 2.24 and earlier allows remote attackers to in
CVE-2008-5840 HIGH 7.5 UPGRADE DOWNGRADE PHP iCalendar 2.24 and earlier allows remote attackers to bypass authentication by setting the phpicalendar an

References

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