CVE-2006-4780: PHP remote file inclusion vulnerability in includes/functions.php in phpBB XS 0.58 and earlier allows remote a

Q: How do I fix CVE-2006-4780?

phpbb xs: upgrade to newer than 0.58. Exact commands for each OS are on this page.

Q: Is CVE-2006-4780 being exploited?

CVE-2006-4780 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-2006-4780 affect?

CVE-2006-4780 affects phpbb xs. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in includes/functions.php in phpBB XS 0.58 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.

Q: How urgent is CVE-2006-4780?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

This week

HIGH 7.5UPGRADE

CVE-2006-4780 is a high-severity flaw (CVSS 7.5) affecting phpbb xs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in includes/functions.php in phpBB XS 0.58 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.

Why this priority

High severity
EPSS top 5%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	8.8% (top 5%)
CISA exploited list	No
Published	2006-09-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: phpbbxs

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

Am I affected?

Timeline

2006-09-14 10:07 UTCPublished CVE record published
2026-06-16 22:29 UTCUpdated Record last modified

phpbbxs phpbb xs UPGRADE

Affected: <= 0.58

Fixed in: newer than 0.58

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy phpbb-xs || rpm -q phpbb-xs || phpbb-xs --version

2. UPGRADE to newer than 0.58 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade phpbb-xs

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade phpbb-xs

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: phpBB XS 0.58 - 'functions.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-2006-4780?

phpbb xs: upgrade to newer than 0.58. Exact commands for each OS are on this page.

Is CVE-2006-4780 being exploited?

CVE-2006-4780 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-2006-4780 affect?

CVE-2006-4780 affects phpbb xs. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in includes/functions.php in phpBB XS 0.58 and earlier allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter.

How urgent is CVE-2006-4780?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2007-5033 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in profile.php in phpBB XS 2 allows remote attackers to inject arbitr
CVE-2006-5094 MEDIUM 5.1 DOWNGRADE PHP remote file inclusion vulnerability in includes/functions_kb.php in the phpBB XS 2 (Spain version) allows
CVE-2006-4893 HIGH 7.5 UPGRADE PHP remote file inclusion vulnerability in bb_usage_stats/includes/bb_usage_stats.php in phpBB XS 0.58 and ear

References

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