CVE-2004-1731: signup_page.php in Mantis bugtracker allows remote attackers to send e-mail bombs by creating multiple users a

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MEDIUM 5.0DOWNGRADE

CVE-2004-1731 is a medium-severity flaw (CVSS 5.0) affecting mantis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

signup_page.php in Mantis bugtracker allows remote attackers to send e-mail bombs by creating multiple users and providing the same e-mail address.

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	3.2% (top 12%)
CISA exploited list	No
Published	2004-08-20
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

2004-08-20 04:00 UTCPublished CVE record published
2026-06-16 22:08 UTCUpdated Record last modified

mantis mantis DOWNGRADE

Affected: 0.9 · 0.9.1 · 0.10 · 0.10.1 · 0.10.2 · 0.11 · 0.11.1 · 0.12

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9 (Debian / Ubuntu)

apt-cache madison mantis sudo apt install mantis=<VERSION_BEFORE_0.9> sudo apt-mark hold mantis

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

dnf --showduplicates list mantis sudo dnf downgrade mantis-<VERSION_BEFORE_0.9> 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.

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: Mantis Bug Tracker 0.x - New Account Signup Mass Emailing

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-2004-1731?

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

Is CVE-2004-1731 being exploited?

CVE-2004-1731 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-2004-1731 affect?

CVE-2004-1731 affects mantis. Severity is medium (CVSS 5.0). signup_page.php in Mantis bugtracker allows remote attackers to send e-mail bombs by creating multiple users and providing the same e-mail address.

How urgent is CVE-2004-1731?

Priority 45/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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