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CVE-2026-109718

🗓️ 13 Oct 2026 12:29:18Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views

Use-after-free in the XML component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-109718
13 Oct 202613:01
–circl
cvelist
Cvelist
CVE-2026-109718 Use-after-free in the XML component
13 Oct 202612:29
–cvelist
debiancve
Debian CVE
CVE-2026-109718
13 Oct 202612:29
–debiancve
euvd
EUVD
EUVD-2026-98640
13 Oct 202612:29
–euvd
mozilla
Mozilla
Security Vulnerabilities fixed in Firefox 158 — Mozilla
13 Oct 202600:00
–mozilla
mozilla
Mozilla
Security Vulnerabilities fixed in Firefox ESR 115.43 — Mozilla
13 Oct 202600:00
–mozilla
mozilla
Mozilla
Security Vulnerabilities fixed in Firefox ESR 153.5 — Mozilla
13 Oct 202600:00
–mozilla
nvd
NVD
CVE-2026-109718
13 Oct 202613:17
–nvd
osv
OSV
DEBIAN-CVE-2026-109718
13 Oct 202613:17
–osv
vulnrichment
Vulnrichment
CVE-2026-109718 Use-after-free in the XML component
13 Oct 202612:29
–vulnrichment
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "115.43",
        "lessThanOrEqual": "115.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "153.5",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "158",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.5",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "158",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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13 Oct 2026 18:16Current
6Medium risk
Vulners AI Score6
CVSS 3.15.4
SSVC
4