Invalid pointer in the JavaScript: WebAssembly component_CVE-2026-6757

6.3 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Description

Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

Basic Information

ID CVE-2026-6757

Source mozilla

Published Apr 21, 2026 at 12:40

Modified Apr 22, 2026 at 15:35

Affected Product

Vendor Mozilla

Product Firefox

Version 140.10

CWE Classification

CWE-824

References

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    "lastseen": "",
    "description": "Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.",
    "published": "2026-04-21T12:40:52.961Z",
    "modified": "2026-04-22T15:35:04.751Z",
    "type": "cve",
    "title": "Invalid pointer in the JavaScript: WebAssembly component",
    "source": "mozilla",
    "references": "https://bugzilla.mozilla.org/show_bug.cgi?id=2013588\nhttps://www.mozilla.org/security/advisories/mfsa2026-30/\nhttps://www.mozilla.org/security/advisories/mfsa2026-32/\nhttps://www.mozilla.org/security/advisories/mfsa2026-33/\nhttps://www.mozilla.org/security/advisories/mfsa2026-34/",
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    "cwe": [
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    "cvelist": null,
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    "cvss": {
        "score": 6.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
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        "availabilityImpact": "",
        "cvssV3": {
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    "href": "",
    "category_name": "CVE",
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    "product": "Firefox",
    "version": "140.10",
    "vendor": "Mozilla",
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}