CVE-2005-0650: Multiple cross-site scripting (XSS) vulnerabilities in ProjectBB 0.4.5.1 allow remote attackers to inject arbi

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MEDIUM 4.3DOWNGRADE

CVE-2005-0650 is a medium-severity flaw (CVSS 4.3) affecting projectbb. 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 ProjectBB 0.4.5.1 allow remote attackers to inject arbitrary web script or HTML via (1) the pages parameter to divers.php (incorrectly referred to as "drivers.php" by some sources), (2) in the search feature text area, (3) forum name, (4) site name or (5) the maximum avatar size in the option section, (5) new category or (6) new forum fields in the forum section.

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	1.9% (top 20%)
CISA exploited list	No
Published	2005-05-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: projectbb

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

Am I affected?

Timeline

2005-05-02 04:00 UTCPublished CVE record published
2026-06-16 22:11 UTCUpdated Record last modified

projectbb projectbb DOWNGRADE

Affected: 0.4.5.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.4.5.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.4.5.1 (Debian / Ubuntu)

apt-cache madison projectbb sudo apt install projectbb=<VERSION_BEFORE_0.4.5.1> sudo apt-mark hold projectbb

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

dnf --showduplicates list projectbb sudo dnf downgrade projectbb-<VERSION_BEFORE_0.4.5.1> sudo dnf versionlock add projectbb

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: ProjectBB 0.4.5.1 - 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-2005-0650?

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

Is CVE-2005-0650 being exploited?

CVE-2005-0650 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-2005-0650 affect?

CVE-2005-0650 affects projectbb. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in ProjectBB 0.4.5.1 allow remote attackers to inject arbitrary web script or HTML via (1) the pages parameter to divers.php (incorrectly referred to as "drivers.php" by some sources), (2)

How urgent is CVE-2005-0650?

Priority 40/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2005-0651 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in ProjectBB 0.4.5.1 allow remote attackers to execute arbitrary SQL co

References

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