CVE-2026-2801
published 2026-02-24CVE-2026-2801: Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
PriorityP337high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.29%
20.8th percentile
Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 148.0-1 (sid) | firefox 148.0-1 (sid) |
| mozilla | firefox | < 148.0 | 148.0 |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 148.0 | 148.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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Red Hat
firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component
vendor_redhat·2026-02-24·CVSS 7.5
CVE-2026-2801 [HIGH] firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component
firefox: thunderbird: Incorrect boundary conditions in the JavaScript: WebAssembly component
Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue:
Incorrect boundary conditions in the JavaScript: WebAssembly component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/thunderbird-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: thunderbird (Red H
Debian
CVE-2026-2801: firefox - Incorrect boundary conditions in the JavaScript: WebAssembly component. This vul...
vendor_debian·2026·CVSS 7.5
CVE-2026-2801 [HIGH] CVE-2026-2801: firefox - Incorrect boundary conditions in the JavaScript: WebAssembly component. This vul...
Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
Scope: local
sid: resolved (fixed in 148.0-1)
Mozilla
Mozilla Foundation Security Advisory 2026-13: CVE-2026-2801
vendor_mozilla·CVSS 7.5
CVE-2026-2801 [HIGH] Mozilla Foundation Security Advisory 2026-13: CVE-2026-2801
Mozilla Foundation Security Advisory 2026-13
CVE: CVE-2026-2801
Product: Firefox
Impact: high
Fixed in: Firefox 148
Mozilla
Mozilla Foundation Security Advisory 2026-16: CVE-2026-2801
vendor_mozilla·CVSS 7.5
CVE-2026-2801 [HIGH] Mozilla Foundation Security Advisory 2026-16: CVE-2026-2801
Mozilla Foundation Security Advisory 2026-16
CVE: CVE-2026-2801
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 148
OSV
CVE-2026-2801: Incorrect boundary conditions in the JavaScript: WebAssembly component
osv·2026-02-24·CVSS 7.5
CVE-2026-2801 [HIGH] CVE-2026-2801: Incorrect boundary conditions in the JavaScript: WebAssembly component
Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148 and Thunderbird < 148.
GHSA
GHSA-3wfp-66x3-wgq2: Incorrect boundary conditions in the JavaScript: WebAssembly component
ghsa_unreviewed·2026-02-24
CVE-2026-2801 [HIGH] CWE-754 GHSA-3wfp-66x3-wgq2: Incorrect boundary conditions in the JavaScript: WebAssembly component
Incorrect boundary conditions in the JavaScript: WebAssembly component. This vulnerability affects Firefox < 148.
No detection rules found.
No public exploits indexed.
2026-02-24
Published