CVE-2020-15648

MEDIUM

Firefox < 78.0.2 and Thunderbird < 78 - UI Layer Bypass via Object or Embed Tags

Title source: llm
STIX 2.1

Description

Using object or embed tags, it was possible to frame other websites, even if they disallowed framing using the X-Frame-Options header. This vulnerability affects Thunderbird < 78 and Firefox < 78.0.2.

References (3)

Core 3
Core References
Issue Tracking, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1644076

Scores

CVSS v3 6.5
EPSS 0.0032
EPSS Percentile 54.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Details

CWE
CWE-1021
Status published
Products (2)
mozilla/firefox < 78.0.2
mozilla/thunderbird < 78.0
Published Aug 10, 2020
Tracked Since Feb 18, 2026