CVE-2003-1506: Cross-site scripting (XSS) vulnerability in dansguardian.pl in Adelix CensorNet 3.0 through 3.2 allows remote

Routine

MEDIUM 4.3DOWNGRADE

CVE-2003-1506 is a medium-severity flaw (CVSS 4.3) affecting dansguardian. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in dansguardian.pl in Adelix CensorNet 3.0 through 3.2 allows remote attackers to execute arbitrary script as other users by injecting arbitrary HTML or script into the DENIEDURL parameter.

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 22%)
CISA exploited list	No
Weakness	CWE-79
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: daniel barron

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

daniel barron dansguardian DOWNGRADE

Affected: 3.0 · 3.1_r5 · 3.1_r6 · 3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison dansguardian sudo apt install dansguardian=<VERSION_BEFORE_3.0> sudo apt-mark hold dansguardian

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

dnf --showduplicates list dansguardian sudo dnf downgrade dansguardian-<VERSION_BEFORE_3.0> sudo dnf versionlock add dansguardian

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: DansGuardian 2.2.x - Denied URL 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-2003-1506?

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

Is CVE-2003-1506 being exploited?

CVE-2003-1506 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-2003-1506 affect?

CVE-2003-1506 affects dansguardian. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in dansguardian.pl in Adelix CensorNet 3.0 through 3.2 allows remote attackers to execute arbitrary script as other users by injecting arbitrary HTML or script into the DENIEDURL parameter.

How urgent is CVE-2003-1506?

Priority 39/100. Public exploit reference

Related CVEs

CVE-2004-2283 MEDIUM 5.0 DOWNGRADE Unknown vulnerability in DansGuardian before 2.6.1-13 allows remote attackers to bypass URL filters via a craf
CVE-2004-2282 MEDIUM 5.0 DOWNGRADE DansGuardian before 2.7.7-2 allows remote attackers to bypass URL filters via a ".." in the request.
CVE-2004-2065 HIGH 7.5 DOWNGRADE DansGuardian 2.8 and earlier allows remote attackers to bypass the extension filtering rule via a hex encoded
CVE-2002-1599 HIGH 7.5 DOWNGRADE DansGuardian before 2.4.5-1 allows remote attackers to bypass content filtering rules via hex-encoded URLs.

References

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