CVE ID :CVE-2026-5731 Published : April 7, 2026, 1:16 p.m. | 28 minutes ago Description :Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 149.0.2, Firefox ESR < 115.34.1, and Firefox ESR < 140.9.1. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...