CVE-2003-1409: TOPo 1.43 allows remote attackers to obtain sensitive information by sending an HTTP request with an invalid p

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MEDIUM 5.0DOWNGRADE

CVE-2003-1409 is a medium-severity flaw (CVSS 5.0) affecting topo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TOPo 1.43 allows remote attackers to obtain sensitive information by sending an HTTP request with an invalid parameter to (1) in.php or (2) out.php, which reveals the path to the TOPo directory in the error message.

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	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-200
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ej3

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

ej3 topo DOWNGRADE

Affected: 1.43

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.43

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.43 (Debian / Ubuntu)

apt-cache madison topo sudo apt install topo=<VERSION_BEFORE_1.43> sudo apt-mark hold topo

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

dnf --showduplicates list topo sudo dnf downgrade topo-<VERSION_BEFORE_1.43> sudo dnf versionlock add topo

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: TOPO 1.41 - Full Path Disclosure

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-2003-1409?

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

Is CVE-2003-1409 being exploited?

CVE-2003-1409 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-2003-1409 affect?

CVE-2003-1409 affects topo. Severity is medium (CVSS 5.0). TOPo 1.43 allows remote attackers to obtain sensitive information by sending an HTTP request with an invalid parameter to (1) in.php or (2) out.php, which reveals the path to the TOPo directory in the error message.

How urgent is CVE-2003-1409?

Priority 44/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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