NetSight
critical9.8

CVE-2019-11691

A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main thread to be called after it has been fr…

Impact

A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main thread to be called after it has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

Affected products

VendorProductAffected versions
MozillaFirefox
before 67.0
MozillaFirefox Esr
before 60.7
MozillaThunderbird
before 60.7

Weakness classification

References