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CVE-2026-92074 Mitigation bypass in the Popup Blocker component

🗓️ 15 Sep 2026 12:34:36Reported by mozillaType 
cvelist
 cvelist
🔗 www.cve.org👁 44 Views

Mitigation bypass in Popup Blocker component fixed in Firefox 156, ESR 153.3, and Thunderbird 156.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
nessus
Tenable Nessus
Amazon Linux 2023 : firefox (ALAS2023-2026-3214)
12 Oct 202600:00
–nessus
nessus
Tenable Nessus
Amazon Linux 2 : firefox (ALASFIREFOX-2026-066)
12 Oct 202600:00
–nessus
nessus
Tenable Nessus
Fedora 43 : thunderbird (2026-a387125860)
30 Sep 202600:00
–nessus
nessus
Tenable Nessus
Fedora 43 : firefox / nss (2026-d7ba4af112)
18 Sep 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Firefox ESR < 153.3
15 Sep 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Firefox < 156.0
15 Sep 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Thunderbird < 153.3
16 Sep 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Thunderbird < 156.0
16 Sep 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Firefox ESR < 153.3
15 Sep 202600:00
–nessus
nessus
Tenable Nessus
Mozilla Firefox < 156.0
15 Sep 202600:00
–nessus
Rows per page
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.3",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "156",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.3",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "156",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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16 Sep 2026 14:24Current
CVSS 3.18.8
EPSS0.00109
SSVC
44