CVE-2006-3299: Cross-site scripting (XSS) vulnerability in index.php in Usenet Script 0.5 allows remote attackers to inject a

Routine

LOW 2.6DOWNGRADE

CVE-2006-3299 is a low-severity flaw (CVSS 2.6) affecting usenet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in index.php in Usenet Script 0.5 allows remote attackers to inject arbitrary web script or HTML via the group parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	2.6 (Low)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2006-06-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: metalheadws

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

Am I affected?

Timeline

2006-06-29 01:05 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

metalheadws usenet DOWNGRADE

Affected: 0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.5 (Debian / Ubuntu)

apt-cache madison usenet sudo apt install usenet=<VERSION_BEFORE_0.5> sudo apt-mark hold usenet

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

dnf --showduplicates list usenet sudo dnf downgrade usenet-<VERSION_BEFORE_0.5> sudo dnf versionlock add usenet

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: Usenet 0.5 - 'index.php' Cross-Site Scripting

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-2006-3299?

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

Is CVE-2006-3299 being exploited?

CVE-2006-3299 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-2006-3299 affect?

CVE-2006-3299 affects usenet. Severity is low (CVSS 2.6). Cross-site scripting (XSS) vulnerability in index.php in Usenet Script 0.5 allows remote attackers to inject arbitrary web script or HTML via the group parameter.

How urgent is CVE-2006-3299?

Priority 34/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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