FKIE_CVE-2026-8947

Vulnerability from fkie_nvd - Published: 2026-05-19 14:16 - Updated: 2026-05-19 18:47
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: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=2038439Permissions Required
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-46/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-47/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-48/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-50/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2026-51/Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox *
mozilla firefox *
mozilla thunderbird *
To clipboard 

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  "descriptions": [
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      "value": "Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11."
    }
  ],
  "id": "CVE-2026-8947",
  "lastModified": "2026-05-19T18:47:52.620",
  "metrics": {
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          "attackComplexity": "LOW",
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
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}


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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

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.