CVE-2020-26967
When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected…
Published: 2020-12-09 · CVSS: Unscored
When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. This vulnerability affects Firefox < 83.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7