CVE-2008-6631: Multiple cross-site scripting (XSS) vulnerabilities in index.php in BlogPHP 2.0 allow remote attackers to inje

Routine

MEDIUM 4.3DOWNGRADE

CVE-2008-6631 is a medium-severity flaw (CVSS 4.3) affecting blogphp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in index.php in BlogPHP 2.0 allow remote attackers to inject arbitrary web script or HTML via the (1) user parameter in a sendmessage action and the (2) username parameter when registering a new user, different vectors than CVE-2008-0679.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-79
Published	2009-04-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: blogphp

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

Am I affected?

Timeline

2009-04-07 14:17 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

blogphp blogphp DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison blogphp sudo apt install blogphp=<VERSION_BEFORE_2.0> sudo apt-mark hold blogphp

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

dnf --showduplicates list blogphp sudo dnf downgrade blogphp-<VERSION_BEFORE_2.0> sudo dnf versionlock add blogphp

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: BlogPHP 2.0 - 'index.php' Multiple Cross-Site Scripting Vulnerabilities

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-2008-6631?

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

Is CVE-2008-6631 being exploited?

CVE-2008-6631 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-2008-6631 affect?

CVE-2008-6631 affects blogphp. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in index.php in BlogPHP 2.0 allow remote attackers to inject arbitrary web script or HTML via the (1) user parameter in a sendmessage action and the (2) username parameter when registering

How urgent is CVE-2008-6631?

Priority 39/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2008-6745 HIGH 7.5 DOWNGRADE index.php in BlogPHP 2.0 allows remote attackers to gain administrator privileges via a crafted email paramete

References

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