CVE-2016-9900
Mozilla: Restricted external resources can be loaded by SVG images through data URLs (MFSA 2016-94, MFSA 2016-95)
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · December 14, 2016
Updated · November 26, 2025
Description
External resources that should be blocked when loaded by SVG images can bypass security restrictions through the use of "data:" URLs. This could allow for cross-domain data leakage. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 · 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N
CWE not specified