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CVE-2004-2226

15
FAUCET Score

CVE-2004-2226 describes a vulnerability in Mozilla Mail 1.7.1 and 1.7.3, and Thunderbird prior to 0.9, where enabling HTML-Mails allows remote attackers to validate email addresses. This low-complexity attack, requiring no authentication, leverages an HTML email referencing a CSS document on an attacker's server to confirm email address validity, resulting in a partial confidentiality impact. Despite its age, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.8CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:0.8:*:*:*:*:*:*:*
1.7.1CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:1.7.1:*:*:*:*:*:*:*
1.7.3CPE matchmatch criteria
cpe:2.3:a:mozilla:thunderbird:1.7.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.21%
Probability of exploitation in next 30 days
EPSS Percentile
65.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0121 is in the 43rd percentile among its peer group of 23,705 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, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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

archives.neohapsis.com / archives/fulldisclosure/2004-11/0070.html
secunia.com / advisories/13086
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/17949
osvdb.org / 11394
Patch