#firefox-esr

0 stories this week · 2 this month · 5 in 6 months · mostly security

Stories per day · 30 days

5 stories, newest first · one card per story

Canada’s Cyber Centre lists builds before Firefox 159, ESR 115.44 and 153.6, and matching Thunderbird versions.

Canada’s Cyber Centre urges updates for Firefox, Firefox ESR, and Thunderbird flaws fixed in October 2026 releases.

Canada's Cyber Centre urges updates for Firefox before 157 and three Firefox ESR branches after Mozilla security fixes.

Canadian Cyber Centre advisory AV26-924 lists vulnerabilities in Firefox 156 and Firefox ESR 115.41, 140.16, and 153.3, urging users to update.

Canada's Cyber Centre reports Mozilla vulnerabilities fixed in Firefox 155 and Firefox ESR 115.40, 140.15, and 153.2.

Stories tagged #firefox-esr