CVE details

CVE-2026-5731

Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2

• Severity: High
• CVSS: N/A
• Published: 2026-04-07
• Fixed in: 149.0.2

Description

Memory safety bugs fixed in Firefox ESR 115.34.1, Firefox ESR 140.9.1, Thunderbird ESR 140.9.1, Firefox 149.0.2 and Thunderbird 149.0.2

Affected products

• Firefox · → 149.0.2
• Firefox · 115.34.0 → 115.34.0
• Firefox · 140.9.0 → 140.9.0
• Firefox · 149.0.1 → 149.0.1

Overlaps: Firefox

Source

View on NVD

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