Firefox 156
Support for Firefox 156 ended on 29/09/2026. There are no more security updates for this branch.
Latest version: 156.0.1, released on 22/09/2026
End of support: 29/09/2026
76 known vulnerabilities open in 156.0.1
Vulnerabilities in Firefox 156
76 vulnerabilities from the NVD affect at least one version of this branch. Last checked on 03/11/2026.
- CVE-2026-106016, CVSS 3.1: 9.8: still open in 156.0.1
- CVE-2026-100810, CVSS 3.1: 9.8: still open in 156.0.1
- CVE-2026-100788, CVSS 3.1: 9.8: still open in 156.0.1
- CVE-2026-100829, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100828, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100819, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100818, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100811, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100804, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100800, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100794, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100787, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100786, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100781, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100778, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100775, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100770, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100762, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100760, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100758, CVSS 3.1: 9.6: still open in 156.0.1
- CVE-2026-100763, CVSS 3.1: 9.1: still open in 156.0.1
- CVE-2026-100831, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100825, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100824, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100820, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100815, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100814, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100813, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100808, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100807, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100801, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100797, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100796, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100791, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100790, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100789, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100785, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100784, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100782, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100780, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100779, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100777, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100776, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100774, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100773, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100772, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100769, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100768, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100767, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100765, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100764, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100761, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100757, CVSS 3.1: 8.8: still open in 156.0.1
- CVE-2026-100830, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100816, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100809, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100803, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100798, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100771, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100759, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100756, CVSS 3.1: 8.1: still open in 156.0.1
- CVE-2026-100805, CVSS 3.1: 7.5: still open in 156.0.1
- CVE-2026-100792, CVSS 3.1: 7.1: still open in 156.0.1
- CVE-2026-100826, CVSS 3.1: 6.5: still open in 156.0.1
- CVE-2026-100812, CVSS 3.1: 6.5: still open in 156.0.1
- CVE-2026-100795, CVSS 3.1: 6.5: still open in 156.0.1
- CVE-2026-100793, CVSS 3.1: 6.5: still open in 156.0.1
- CVE-2026-100822, CVSS 3.1: 5.4: still open in 156.0.1
- CVE-2026-100817, CVSS 3.1: 5.4: still open in 156.0.1
- CVE-2026-100821, CVSS 3.1: 4.7: still open in 156.0.1
- CVE-2026-96869, CVSS 3.1: 4.3: still open in 156.0.1
- CVE-2026-100806, CVSS 3.1: 4.3: still open in 156.0.1
- CVE-2026-100802, CVSS 3.1: 4.3: still open in 156.0.1
- CVE-2026-100799, CVSS 3.1: 4.3: still open in 156.0.1
- CVE-2026-100783, CVSS 3.1: 4.3: still open in 156.0.1
- CVE-2026-100766, CVSS 3.1: 4.3: still open in 156.0.1
66 vulnerabilities of Firefox have no version information in the NVD and are not assigned to any branch.
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