CVE-2026-117976
Full vulnerability record from the local CVENow database.
Description
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Deferred
Source identifier
Published
2026-10-27 14:16:55.540000
Last modified
2026-10-27 19:17:23.407000
View original CVE JSON
{
"id": "CVE-2026-117976",
"sourceIdentifier": "[email protected]",
"published": "2026-10-27T14:16:55.540",
"lastModified": "2026-10-27T19:17:23.407",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 159, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Mozilla",
"product": "Firefox",
"versions": [
{
"version": "153.6",
"lessThanOrEqual": "153.*",
"versionType": "rpm",
"status": "unaffected"
},
{
"version": "159",
"lessThanOrEqual": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Mozilla",
"product": "Thunderbird",
"versions": [
{
"version": "153.6",
"lessThanOrEqual": "153.*",
"versionType": "rpm",
"status": "unaffected"
},
{
"version": "159",
"lessThanOrEqual": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2076816",
"source": "[email protected]"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-118/",
"source": "[email protected]"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-120/",
"source": "[email protected]"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-121/",
"source": "[email protected]"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-122/",
"source": "[email protected]"
}
]
}