CVE-2004-1828: Vcard 2.9 and possibly other versions does not require authorization to run uninstall.php, which could allow r

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MEDIUM 5.0DOWNGRADE

CVE-2004-1828 is a medium-severity flaw (CVSS 5.0) affecting vcard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Vcard 2.9 and possibly other versions does not require authorization to run uninstall.php, which could allow remote attackers to uninstall Vcard and delete database tables via a direct request to uninstall.php.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: belchior foundry

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

belchior foundry vcard DOWNGRADE

Affected: 2.8 · 2.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.8 (Debian / Ubuntu)

apt-cache madison vcard sudo apt install vcard=<VERSION_BEFORE_2.8> sudo apt-mark hold vcard

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

dnf --showduplicates list vcard sudo dnf downgrade vcard-<VERSION_BEFORE_2.8> sudo dnf versionlock add vcard

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: Belchior Foundry VCard 2.8 - Authentication Bypass

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-2004-1828?

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

Is CVE-2004-1828 being exploited?

CVE-2004-1828 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-2004-1828 affect?

CVE-2004-1828 affects vcard. Severity is medium (CVSS 5.0). Vcard 2.9 and possibly other versions does not require authorization to run uninstall.php, which could allow remote attackers to uninstall Vcard and delete database tables via a direct request to uninstall.php.

How urgent is CVE-2004-1828?

Priority 44/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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