CVE-2004-1734: PHP remote file inclusion vulnerability in Mantis 0.19.0a allows remote attackers to execute arbitrary PHP cod

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HIGH 7.5DOWNGRADE

CVE-2004-1734 is a high-severity flaw (CVSS 7.5) affecting mantis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in Mantis 0.19.0a allows remote attackers to execute arbitrary PHP code by modifying the (1) t_core_path parameter to bug_api.php or (2) t_core_dir parameter to relationship_api.php to reference a URL on a remote web server that contains the code.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mantis

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

mantis mantis DOWNGRADE

Affected: 0.19.0a

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.19.0a

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.19.0a (Debian / Ubuntu)

apt-cache madison mantis sudo apt install mantis=<VERSION_BEFORE_0.19.0a> sudo apt-mark hold mantis

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

dnf --showduplicates list mantis sudo dnf downgrade mantis-<VERSION_BEFORE_0.19.0a> sudo dnf versionlock add mantis

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-2004-1734?

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

Is CVE-2004-1734 being exploited?

CVE-2004-1734 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-2004-1734 affect?

CVE-2004-1734 affects mantis. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in Mantis 0.19.0a allows remote attackers to execute arbitrary PHP code by modifying the (1) t_core_path parameter to bug_api.php or (2) t_core_dir parameter to relationship_api.php to reference a URL

How urgent is CVE-2004-1734?

Priority 50/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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