CVE-2019-11761

MEDIUM

Firefox < 70, Thunderbird < 68.2, Firefox ESR < 68.2 - CSRF

Title source: llm
STIX 2.1

Description

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

References (6)

Core 6
Core References
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-35/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-33/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2019-34/
Issue Tracking, Permissions Required x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1561502
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202003-10
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4335-1/

Scores

CVSS v3 5.4
EPSS 0.0041
EPSS Percentile 61.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Details

CWE
CWE-862 CWE-362
Status published
Products (4)
canonical/ubuntu_linux 16.04
mozilla/firefox < 70.0
mozilla/firefox_esr < 68.2
mozilla/thunderbird < 68.2
Published Jan 08, 2020
Tracked Since Feb 18, 2026