CVE-2006-4450

PHPBB 2.0.20 - Server-Side Request Forgery via Avatar URL Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-4450. PoCs published by rgod.

AI-analyzed exploit summary The provided text describes a vulnerability in phpBB that allows it to be used as an unauthorized HTTP proxy. The example URL demonstrates how an attacker could manipulate phpBB to fetch remote content, potentially leading to SSRF or other proxy-related abuses.

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.

Exploits (1)

exploitdb WRITEUP VERIFIED
by rgod · textwebappsphp
https://www.exploit-db.com/exploits/27863

The provided text describes a vulnerability in phpBB that allows it to be used as an unauthorized HTTP proxy. The example URL demonstrates how an attacker could manipulate phpBB to fetch remote content, potentially leading to SSRF or other proxy-related abuses.

Classification
Writeup 80%
Attack Type
Ssrf
Complexity
Trivial
Reliability
Theoretical
Target: phpBB (version not specified)
No auth needed
Prerequisites: Access to a vulnerable phpBB instance
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/1470
Third Party Advisory mailing-list x_refsource_bugtraq
http://archives.neohapsis.com/archives/bugtraq/2006-05/0238.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/26537
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/17965
Patch, Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/20093

Scores

EPSS 0.0401
EPSS Percentile 89.2%

Details

Status published
Products (1)
phpbb_group/phpbb 2.0.20
Published Aug 30, 2006
Tracked Since Feb 18, 2026