CVE-2026-74946
Full vulnerability record from the local CVENow database.
Description
Information disclosure due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2026-08-18 13:17:31.277000
Last modified
2026-10-28 17:18:36.443000
View original CVE JSON
{
"id": "CVE-2026-74946",
"sourceIdentifier": "[email protected]",
"published": "2026-08-18T13:17:31.277",
"lastModified": "2026-10-28T17:18:36.443",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Information disclosure due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"product": "Firefox",
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},
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{
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},
{
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"lessThanOrEqual": "*",
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}
]
},
{
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},
{
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},
{
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]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
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],
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"description": [
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"value": "CWE-119"
}
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"configurations": [
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"references": [
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"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2059997",
"source": "[email protected]",
"tags": [
"Permissions Required"
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},
{
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}