Is CVE-2006-6421 actively exploited?

CVE-2006-6421 has no public evidence of in-the-wild exploitation as of 2025-04-09.

What is the CVSS score for CVE-2006-6421?

CVE-2006-6421 has a CVSS score of 6 (UNKNOWN severity). Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P.

How do I patch CVE-2006-6421?

Patch guidance is available from phpbb group security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2006-6421.

CVE-2006-6421 - remediation guidance & executive summary

Q: Which products are affected by CVE-2006-6421?

32 products: phpbb group phpbb, phpbb group phpbb, phpbb group phpbb, phpbb group phpbb, phpbb group phpbb, and 27 more.

Description

Cross-site scripting (XSS) vulnerability in the private message box implementation (privmsg.php) in phpBB 2.0.x allows remote authenticated users to inject arbitrary web script or HTML via the "Message body" field in a message to a non-existent user.

CVSS Metrics

Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P
Access Vector: network
Access Cmplx: medium
Auth: single
Confidentiality: partial
Integrity: partial
Availability: partial
Weaknesses: NVD-CWE-Other

Metadata

Primary Vendor: PHPBB_GROUP
Published: 12/10/2006
Last Modified: 4/9/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

phpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbbphpbb_group : phpbb

Remediation Guidance

Executive Summary

View on NIST NVD