CVE-2006-5496: Multiple cross-site scripting (XSS) vulnerabilities in Timothy Claason KnowledgeBank 1.01 allow remote attacke

Routine

MEDIUM 4.3DOWNGRADE

CVE-2006-5496 is a medium-severity flaw (CVSS 4.3) affecting knowledgebank. 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 Timothy Claason KnowledgeBank 1.01 allow remote attackers to inject arbitrary web script or HTML via unspecified parameters to (1) index.php, (2) addknowledge.php, and (3) addscreenshot.php.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2006-10-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: timothy claason

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

Am I affected?

Timeline

2006-10-25 10:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

timothy claason knowledgebank DOWNGRADE

Affected: 1.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.01

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.01 (Debian / Ubuntu)

apt-cache madison knowledgebank sudo apt install knowledgebank=<VERSION_BEFORE_1.01> sudo apt-mark hold knowledgebank

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

dnf --showduplicates list knowledgebank sudo dnf downgrade knowledgebank-<VERSION_BEFORE_1.01> sudo dnf versionlock add knowledgebank

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.

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-2006-5496?

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

Is CVE-2006-5496 being exploited?

CVE-2006-5496 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-2006-5496 affect?

CVE-2006-5496 affects knowledgebank. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in Timothy Claason KnowledgeBank 1.01 allow remote attackers to inject arbitrary web script or HTML via unspecified parameters to (1) index.php, (2) addknowledge.php, and (3) addscreenshot

How urgent is CVE-2006-5496?

Priority 33/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

References

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