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CVE-2026-2804

🗓️ 24 Feb 2026 13:33:32Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 119 Views

CVE-2026-2804 use-after-free in the JavaScript WebAssembly component affecting Firefox before 148.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
freebsd
FreeBSD
Firefox -- Multiple vulnerabilities
24 Feb 202600:00
–freebsd
attackerkb
attackerkb
CVE-2026-2804
24 Feb 202613:33
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-2804
24 Feb 202613:33
–alpinelinux
astralinux
AstraLinux
Astra Linux – Vulnerability in Firefox
1 Apr 202603:55
–astralinux
bdu_fstec
BDU FSTEC
WebAssembly Firefox Thunderbird Confidential Data Compromise
4 May 202600:00
–bdu_fstec
cgr
Chainguard
CVE-2026-2804 vulnerabilities
1 Jul 202614:17
–cgr
cnnvd
CNNVD
Mozilla Firefox and Mozilla Thunderbird security vulnerabilities
24 Feb 202600:00
–cnnvd
cnvd
CNVD
Mozilla Firefox and Mozilla Thunderbird Code Execution Vulnerability
11 Mar 202600:00
–cnvd
cvelist
Cvelist
CVE-2026-2804 Use-after-free in the JavaScript: WebAssembly component
24 Feb 202613:33
–cvelist
debiancve
Debian CVE
CVE-2026-2804
24 Feb 202613:33
–debiancve
Rows per page
NVD
Node
OR
mozillafirefoxRange<148.0-
mozillathunderbirdRange<148.0-
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "148",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "148",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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17 Jun 2026 10:31Current
6Medium risk
Vulners AI Score6
CVSS 3.15.4
EPSS0.0047
SSVC
119