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Vulnerability record · CVE-2006-4450 · published 30 August 2006

CVE-2006-4450: Phpbb group phpbb vulnerability

Phpbb Group · Phpbb

usercp_avatar.php in PHPBB 2.0.20, when avatar uploading is enabled, allows remote attackers to use the server as a web proxy by submitting a URL to the avatarurl parameter, which is then used in an HTTP GET request.

5.1 CVSS 2.0 Medium EPSS 4.2% · top 9.4%
5.1CVSS 2.0 base score
4.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

usercp_avatar.php in PHPBB 2.0.20, when avatar uploading is enabled, allows remote attackers to use the server as a web proxy by submitting a URL to the avatarurl parameter, which is then used in an HTTP GET request.

AV:N/AC:H/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2006-05/0238.html
http://secunia.com/advisories/20093 PatchVendor Advisory
http://securityreason.com/securityalert/1470
http://www.securityfocus.com/bid/17965 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/26537
http://archives.neohapsis.com/archives/bugtraq/2006-05/0238.html
http://secunia.com/advisories/20093 PatchVendor Advisory
http://securityreason.com/securityalert/1470
http://www.securityfocus.com/bid/17965 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/26537

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2007-1695Phpbb group phpbb vulnerabilityPHP remote file inclusion vulnerability in includes/usercp_register.php in phpBB 2.0.19 allows remote attackers to execute arbitrary PHP code via a U…EPSS 1.9%10.0CVE-2006-6839Phpbb group phpbb vulnerabilityUnspecified vulnerability in phpBB before 2.0.22 has unknown impact and remote attack vectors related to "criteria for 'bad' redirection targets."EPSS 1.6%10.0CVE-2006-6840Phpbb group phpbb vulnerabilityUnspecified vulnerability in phpBB before 2.0.22 has unknown impact and remote attack vectors related to a "negative start parameter."EPSS 1.6%10.0CVE-2006-6841Phpbb group phpbb vulnerabilityCertain forms in phpBB before 2.0.22 lack session checks, which has unknown impact and remote attack vectors.EPSS 1.6%10.0CVE-2002-1537Phpbb group phpbb vulnerabilityadmin_ug_auth.php in phpBB 2.0.0 allows local users to gain administrator privileges by directly calling admin_ug_auth.php with modifed form fields s…EPSS 2.5%10.0CVE-2002-2176Phpbb group phpbb vulnerabilitySQL injection vulnerability in Gender MOD 1.1.3 allows remote attackers to gain administrative access via the user_level parameter in the User Profil…EPSS 3.3%10.0CVE-2002-0473Phpbb group phpbb vulnerabilitydb.php in phpBB 2.0 (aka phpBB2) RC-3 and earlier allows remote attackers to execute arbitrary code from remote servers via the phpbb_root_path param…EPSS 5.3%7.5CVE-2006-5435Phpbb group phpbb vulnerabilityPHP remote file inclusion vulnerability in groupcp.php in phpBB 2.0.10 and earlier allows remote attackers to execute arbitrary PHP code via a URL in…EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2006-4450), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.