CVE-2019-11761

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.

• CWE-362
• CWE-862

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

Published

Jan 8, 2020

Last Modified

Jun 17, 2026

Status

Modified

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