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CVE-2026-84129

🗓️ 01 Sep 2026 12:18:56Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 10 Views

Site isolation issue in Firefox DOM Navigation component, fixed in Firefox 155 and ESR 153.2.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-84129 Site isolation issue in the DOM: Navigation component
1 Sep 202612:18
cvelist
debiancve
Debian CVE
CVE-2026-84129
1 Sep 202612:18
debiancve
euvd
EUVD
EUVD-2026-69078
1 Sep 202612:18
euvd
nvd
NVD
CVE-2026-84129
1 Sep 202613:20
nvd
osv
OSV
UBUNTU-CVE-2026-84129
1 Sep 202600:00
osv
ptsecurity
Positive Technologies
PT-2026-84182
1 Sep 202600:00
ptsecurity
ubuntucve
UbuntuCve
CVE-2026-84129
1 Sep 202600:00
ubuntucve
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.2",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "155",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.2",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "155",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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01 Sep 2026 21:44Current
5.9Medium risk
Vulners AI Score5.9
10