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CVE-2026-84118 Use-after-free in the JavaScript: GC component

🗓️ 01 Sep 2026 12:18:48Reported by mozillaType 
cvelist
 cvelist
🔗 www.cve.org👁 9 Views

Use-after-free in Firefox JavaScript GC component, fixed in Firefox 155 and ESR 153.2.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-84118
1 Sep 202612:18
cve
debiancve
Debian CVE
CVE-2026-84118
1 Sep 202612:18
debiancve
euvd
EUVD
EUVD-2026-69070
1 Sep 202612:18
euvd
mozilla
Mozilla
Security Vulnerabilities fixed in Firefox 155 — Mozilla
1 Sep 202600:00
mozilla
mozilla
Mozilla
Security Vulnerabilities fixed in Firefox ESR 153.2 — Mozilla
1 Sep 202600:00
mozilla
nvd
NVD
CVE-2026-84118
1 Sep 202613:20
nvd
osv
OSV
UBUNTU-CVE-2026-84118
1 Sep 202600:00
osv
ptsecurity
Positive Technologies
PT-2026-84171
1 Sep 202600:00
ptsecurity
ubuntucve
UbuntuCve
CVE-2026-84118
1 Sep 202600:00
ubuntucve
vulnrichment
Vulnrichment
CVE-2026-84118 Use-after-free in the JavaScript: GC component
1 Sep 202612:18
vulnrichment
[
  {
    "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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