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5.3

Firefox opens web page when Outlook email is dragged in

CVE-2018-12381 · published 8 years ago
Summary

On Windows computers, dragging an Outlook email into Firefox can make the browser load a website because parts of the email are mistakenly treated as a link. This behavior occurs in Firefox versions before the latest release. Updating Firefox to the current version resolves the issue.

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 firefox < 60.2.0
< 62.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Original advisory text
Manually dragging and dropping an Outlook email message into the browser will trigger a page navigation when the message's mail columns are incorrectly interpreted as a URL. *Note: this issue only ...
Manually dragging and dropping an Outlook email message into the browser will trigger a page navigation when the message's mail columns are incorrectly interpreted as a URL. *Note: this issue only affects Windows operating systems with Outlook installed. Other operating systems are not affected.*. This vulnerability affects Firefox ESR < 60.2 and Firefox < 62.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.3 Medium
Exploitation
2% chance of attack within 30 days
Type
CWE-610Externally Controlled Reference to a Resource in Another Sphere
Timeline
Published18 Oct 2018
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2018-12381 · NVD
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