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9.3

Thunderbird email editor can leak data or crash

CVE-2006-0884 · published 20 years ago
Summary

If you use Thunderbird version 1.0.7 or earlier, a specially crafted email can trick the program into running hidden code when you edit the message. This could expose private information or cause the application to stop working. Upgrade to a newer Thunderbird version or avoid opening and editing unknown emails.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
mozilla thunderbird <= 1.0.7
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.7.1
0.7.2
0.7.3
0.8
6 more version ranges
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Original advisory text
The WYSIWYG rendering engine ("rich mail" editor) in Mozilla Thunderbird 1.0.7 and earlier allows user-assisted attackers to bypass javascript security settings and obtain sensitive information or ...
The WYSIWYG rendering engine ("rich mail" editor) in Mozilla Thunderbird 1.0.7 and earlier allows user-assisted attackers to bypass javascript security settings and obtain sensitive information or cause a crash via an e-mail containing a javascript URI in the SRC attribute of an IFRAME tag, which is executed when the user edits the e-mail.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
9.3 Critical
Exploitation
7% chance of attack within 30 days
Type
CWE-20Improper Input Validation
Timeline
Published24 Feb 2006
Updated15 Oct 2026
First seen29 Sep 2026
Sources
CVE-2006-0884 · NVD
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