CVE-2008-5947: PHP remote file inclusion vulnerability in include/class_yapbbcooker.php in YapBB 1.2.Beta 2 allows remote att

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MEDIUM 6.8DOWNGRADE

CVE-2008-5947 is a medium-severity flaw (CVSS 6.8) affecting yapbb. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in include/class_yapbbcooker.php in YapBB 1.2.Beta 2 allows remote attackers to execute arbitrary PHP code via a URL in the cfgIncludeDirectory parameter.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Weakness	CWE-94
Published	2009-01-22
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: yapbb

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

Am I affected?

Timeline

2009-01-22 11:30 UTCPublished CVE record published
2026-06-16 23:01 UTCUpdated Record last modified

yapbb yapbb DOWNGRADE

Affected: 1.2 beta2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison yapbb sudo apt install yapbb=<VERSION_BEFORE_1.2> sudo apt-mark hold yapbb

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

dnf --showduplicates list yapbb sudo dnf downgrade yapbb-<VERSION_BEFORE_1.2> sudo dnf versionlock add yapbb

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: YapBB 1.2 - 'class_yapbbcooker.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-2008-5947?

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

Is CVE-2008-5947 being exploited?

CVE-2008-5947 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-2008-5947 affect?

CVE-2008-5947 affects yapbb. Severity is medium (CVSS 6.8). PHP remote file inclusion vulnerability in include/class_yapbbcooker.php in YapBB 1.2.Beta 2 allows remote attackers to execute arbitrary PHP code via a URL in the cfgIncludeDirectory parameter.

How urgent is CVE-2008-5947?

Priority 49/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2009-0768 HIGH 7.5 UPGRADE SQL injection vulnerability in forumhop.php in YapBB 1.2 and earlier allows remote attackers to execute arbitr

References

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