GHSA-H3QC-GF9H-42G6

Vulnerability from github – Published: 2026-02-24 15:30 – Updated: 2026-06-30 03:35
VLAI
Details

Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, and Firefox ESR < 140.8.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
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{
  "affected": [],
  "aliases": [
    "CVE-2026-2775"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-24T14:16:25Z",
    "severity": "CRITICAL"
  },
  "details": "Mitigation bypass in the DOM: HTML Parser component. This vulnerability affects Firefox \u003c 148, Firefox ESR \u003c 115.33, and Firefox ESR \u003c 140.8.",
  "id": "GHSA-h3qc-gf9h-42g6",
  "modified": "2026-06-30T03:35:44Z",
  "published": "2026-02-24T15:30:31Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2775"
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      "type": "CVSS_V3"
    }
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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

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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.
  • 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.