CVE-2026-2775CRITICAL 9.8EPSS p42.8%

CVE-2026-2775CVE-2026-2775

Description

Mitigation bypass in the DOM: HTML Parser component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.57% probability of exploitation · percentile 42.8% · 2026-06-19T12:03:05Z
Published2026-02-24
Last modified2026-04-13

Underlying weaknesses· 1

CWE-288

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=2015199
  2. https://www.mozilla.org/security/advisories/mfsa2026-13/
  3. https://www.mozilla.org/security/advisories/mfsa2026-14/
  4. https://www.mozilla.org/security/advisories/mfsa2026-15/
  5. https://www.mozilla.org/security/advisories/mfsa2026-16/
  6. https://www.mozilla.org/security/advisories/mfsa2026-17/

1

TypeTargetConfidenceTier
WeaknessAuthentication Bypass Using an Alternate Path or Channelcwe-2880%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-2784
CVE
CVE-2026-2771
CVE
CVE-2025-13018
CVE
CVE-2026-0877
CVE
CVE-2026-6771
CVE
CVE-2026-8962
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.