FKIE_CVE-2026-8090

Vulnerability from fkie_nvd - Published: 2026-05-07 13:16 - Updated: 2026-05-08 20:08
Severity ?
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Summary
Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=2034352Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-40/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-41/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-42/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-43/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-44/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox *
mozilla firefox *
mozilla thunderbird *
mozilla thunderbird *
To clipboard 

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              "matchCriteriaId": "AF96A878-0508-42AF-A345-ACBC2FE28DD2",
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  "cveTags": [],
  "descriptions": [
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      "value": "Use-after-free in the DOM: Networking component. This vulnerability was fixed in Firefox 150.0.2, Firefox ESR 140.10.2, Firefox ESR 115.35.2, Thunderbird 150.0.2, and Thunderbird 140.10.2."
    }
  ],
  "id": "CVE-2026-8090",
  "lastModified": "2026-05-08T20:08:50.323",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
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  "published": "2026-05-07T13:16:13.967",
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      "tags": [
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2034352"
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      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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