CVE-2026-2762
Integer overflow in the JavaScript: Standard Library component
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
Integer overflow in the JavaScript: Standard Library component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
| Vendor | mozilla |
| Product | firefox |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 24, 2026 |
| Last Updated | Jul 15, 2026 |
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Affected Versions
Mozilla / Firefox
All versions affected Mozilla / Thunderbird
All versions affected References
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2011649 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-13/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-15/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-16/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-17/ access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-2762 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2442308 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2762.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3984 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3976 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:4260 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3361 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3517 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3338 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3515 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3492 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:4432 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3491 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3980 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3495 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3979 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3494 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:4022 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3493 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3983 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:4152 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3978 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3496 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3981 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3497 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3982 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3339 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:3516
Credits
André Bargull