CVE-2004-2020: Multiple cross-site scripting (XSS) vulnerabilities in Php-Nuke 6.x through 7.3 allow remote attackers to inje

Routine

MEDIUM 4.3DOWNGRADE

CVE-2004-2020 is a medium-severity flaw (CVSS 4.3) affecting php-nuke. 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 Php-Nuke 6.x through 7.3 allow remote attackers to inject arbitrary HTML or web script into the (1) optionbox parameter in the News module, (2) date parameter in the Statistics module, (3) year, month, and month_1 parameters in the Stories_Archive module, (4) mode, order, and thold parameters in the Surveys module, or (5) a SQL statement to index.php, as processed by mainfile.php.

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	1.4% (top 27%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: francisco burzi

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:08 UTCUpdated Record last modified

francisco burzi php-nuke DOWNGRADE

Affected: 6.0 · 6.5 · 6.5_beta1 · 6.5_final · 6.5_rc1 · 6.5_rc2 · 6.5_rc3 · 6.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0

1. Check installed version

apt-cache policy php-nuke || rpm -q php-nuke || php-nuke --version

2. No fixed release: DOWNGRADE to a release before 6.0 (Debian / Ubuntu)

apt-cache madison php-nuke sudo apt install php-nuke=<VERSION_BEFORE_6.0> sudo apt-mark hold php-nuke

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

dnf --showduplicates list php-nuke sudo dnf downgrade php-nuke-<VERSION_BEFORE_6.0> sudo dnf versionlock add php-nuke

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-2004-2020?

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

Is CVE-2004-2020 being exploited?

CVE-2004-2020 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-2004-2020 affect?

CVE-2004-2020 affects php-nuke. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in Php-Nuke 6.x through 7.3 allow remote attackers to inject arbitrary HTML or web script into the (1) optionbox parameter in the News module, (2) date parameter in the Statistics module,

How urgent is CVE-2004-2020?

Priority 38/100. Public exploit reference

Software pages

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References

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