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CVE-2026-74955

🗓️ 18 Aug 2026 12:23:37Reported by mozillaType 
cve
 cve
🔗 web.nvd.nist.gov👁 13 Views

Privilege escalation in Firefox's Request Handling component, fixed in Firefox 154 and ESR 153.1.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-74955 Privilege escalation in the Request Handling component
18 Aug 202612:23
cvelist
debiancve
Debian CVE
CVE-2026-74955
18 Aug 202612:23
debiancve
euvd
EUVD
EUVD-2026-60682
18 Aug 202612:23
euvd
nvd
NVD
CVE-2026-74955
18 Aug 202613:17
nvd
ptsecurity
Positive Technologies
PT-2026-76988
18 Aug 202600:00
ptsecurity
vulnrichment
Vulnrichment
CVE-2026-74955 Privilege escalation in the Request Handling component
18 Aug 202612:23
vulnrichment
NVD
Node
OR
mozillafirefoxRange<153.1.0esr
mozillafirefoxRange<154.0.0-
mozillathunderbirdRange<153.1.0esr
mozillathunderbirdRange<154.0-
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.1",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "154",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "153.1",
        "lessThanOrEqual": "153.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "154",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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19 Aug 2026 00:59Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.18.8
SSVC
13