CVE-2004-2063: Cross-site scripting (XSS) vulnerability in antiboard.php in AntiBoard 0.7.2 and earlier allows remote attacke

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MEDIUM 4.3DOWNGRADE

CVE-2004-2063 is a medium-severity flaw (CVSS 4.3) affecting antiboard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in antiboard.php in AntiBoard 0.7.2 and earlier allows remote attackers to inject arbitrary HTML or web script via the feedback 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	3.6% (top 11%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: antiboard

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

antiboard antiboard DOWNGRADE

Affected: 0.6 · 0.7 · 0.7.1 · 0.7.2 · 0.61 · 0.62 · 0.63

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.6 (Debian / Ubuntu)

apt-cache madison antiboard sudo apt install antiboard=<VERSION_BEFORE_0.6> sudo apt-mark hold antiboard

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

dnf --showduplicates list antiboard sudo dnf downgrade antiboard-<VERSION_BEFORE_0.6> sudo dnf versionlock add antiboard

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: AntiBoard 0.6/0.7 - 'antiboard.php?feedback' 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-2004-2063?

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

Is CVE-2004-2063 being exploited?

CVE-2004-2063 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-2004-2063 affect?

CVE-2004-2063 affects antiboard. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in antiboard.php in AntiBoard 0.7.2 and earlier allows remote attackers to inject arbitrary HTML or web script via the feedback parameter.

How urgent is CVE-2004-2063?

Priority 42/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2004-2062 HIGH 7.5 DOWNGRADE SQL injection vulnerability in antiboard.php in AntiBoard 0.7.2 and earlier allows remote attackers to execute

References

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