CVE-2016-2821
Mozilla: Use-after-free deleting tables from a contenteditable document (MFSA 2016-51)
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · June 8, 2016
Updated · January 14, 2026
Description
Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.
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 2.0 · 5.1AV:N/AC:H/Au:N/C:P/I:P/A:P
CWE not specified