CVE-2006-4450

NONECVSS 0.0Weaponized

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 89.6%
KEV: Not listed

Published

August 30, 2006

Last Modified

April 16, 2026

References (10)

cve@mitrehttp://archives.neohapsis.com/archives/bugtraq/2006-05/0238.html
cve@mitrehttp://secunia.com/advisories/20093
cve@mitrehttp://securityreason.com/securityalert/1470
cve@mitrehttp://www.securityfocus.com/bid/17965
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/26537
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2006-05/0238.html
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/20093
af854a3a-2127-422b-91ae-364da2661108http://securityreason.com/securityalert/1470
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/17965
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/26537

Data Freshness Timeline

(refreshed 12× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-27863✓ verified
First seen May 12, 2006
phpBB 2.0.20 - Unauthorized HTTP Proxy
Open source ↗

Frequently asked(4)

What is CVE-2006-4450?

CVE-2006-4450 is a none vulnerability published on August 30, 2006. 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.

When was CVE-2006-4450 disclosed?

CVE-2006-4450 was first published in the National Vulnerability Database on August 30, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2006-4450 actively exploited?

CVE-2006-4450 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2006-4450?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-4450, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2006-4450

📅 Published

🔄 Last Modified

🔗 References (10)