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CVE-2005-4621

14
FAUCET Score

CVE-2005-4621 describes a cross-site scripting (XSS) vulnerability in vBulletin 3.5.1, specifically within the editavatar page. Attackers can inject arbitrary web script or HTML by providing a malformed URL in the remote avatar URL field, potentially requiring a file extension like .jpg to trigger a parsing error. This vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack with medium complexity, leading to potential information disclosure (P) but no impact on confidentiality or availability. There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage surrounding this older vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1CPE matchmatch criteria
cpe:2.3:a:jelsoft:vbulletin:1.0.1:*:lite:*:*:*:*:*
2.0.3CPE matchmatch criteria
cpe:2.3:a:jelsoft:vbulletin:2.0.3:*:*:*:*:*:*:*
2.0_rc2CPE matchmatch criteria
cpe:2.3:a:jelsoft:vbulletin:2.0_rc2:*:*:*:*:*:*:*
2.0_rc3CPE matchmatch criteria
cpe:2.3:a:jelsoft:vbulletin:2.0_rc3:*:*:*:*:*:*:*
2.2.0CPE matchmatch criteria
cpe:2.3:a:jelsoft:vbulletin:2.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 28th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

pridels0.blogspot.com / 2005/11/vbulletin-351-xss-vuln.html
osvdb.org / 21373
securityfocus.com / bid/16128
vbulletin.com / forum/showthread.php
Patch