CVE-2006-4450

Phpbb vulnerability

CVSS

5.1

EPSS

4.0%

EPSS pct

89th

Exploited

No known

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.

Affected vendor

Phpbb Group

Affected product

Phpbb

CVSS vector

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

Published

2006-08-30

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2006-4450

Confirm whether Phpbb Group Phpbb is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2006-4450.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-4450

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-4450 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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