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CVE-2026-92040 Use-after-free in the JavaScript: WebAssembly component

🗓️ 15 Sep 2026 12:34:01Reported by mozillaType 
cvelist
 cvelist
🔗 www.cve.org👁 21 Views

Use-after-free in Firefox 156 and Thunderbird 156 JavaScript: WebAssembly component.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-92040
15 Sep 202612:34
cve
debiancve
Debian CVE
CVE-2026-92040
15 Sep 202612:34
debiancve
euvd
EUVD
EUVD-2026-78503
15 Sep 202612:34
euvd
nessus
Tenable Nessus
Mozilla Firefox < 156.0
15 Sep 202600:00
nessus
nessus
Tenable Nessus
Mozilla Firefox < 156.0
15 Sep 202600:00
nessus
mozilla
Mozilla
Security Vulnerabilities fixed in Firefox 156 — Mozilla
15 Sep 202600:00
mozilla
nvd
NVD
CVE-2026-92040
15 Sep 202613:16
nvd
osv
OSV
UBUNTU-CVE-2026-92040
16 Sep 202600:00
osv
ptsecurity
Positive Technologies
PT-2026-91976
15 Sep 202600:00
ptsecurity
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "156",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "156",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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15 Sep 2026 20:01Current
EPSS0.0015
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