CVE-2006-5503

Name: CVE-2006-5503
Creator: NVD / NIST
Published: 2006-10-25T22:07:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.57%

Last modified Jun 16, 2026

CVE-2006-5503 is a vulnerability of currently unknown severity. Cross-site scripting (XSS) vulnerability in index.php in Simple Machines Forum (SMF) 1.1 RC2 allows remote attackers to inject arbitrary web script or HTML via the action parameter.. EPSS estimates a 1.57% chance of exploitation in the next 30 days.

Description

Cross-site scripting (XSS) vulnerability in index.php in Simple Machines Forum (SMF) 1.1 RC2 allows remote attackers to inject arbitrary web script or HTML via the action parameter.

Metrics

EPSS Probability

1.57%

72.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Simple Machines	Simple Machines Forum	1.1_rc2

References

Timeline

Published: Oct 25, 2006
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2006-5503?

Cross-site scripting (XSS) vulnerability in index.php in Simple Machines Forum (SMF) 1.1 RC2 allows remote attackers to inject arbitrary web script or HTML via the action parameter.

How severe is CVE-2006-5503?

Severity scoring for CVE-2006-5503 is pending analysis. The EPSS model estimates a 1.57% probability of exploitation in the next 30 days.

How do I fix CVE-2006-5503?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2006-5503?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST