CVE-2026-6762

6.3 MEDIUM

Published: April 21, 2026 Modified: April 22, 2026

Description

Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=2021080

Source: security@mozilla.org

Permissions Required

https://www.mozilla.org/security/advisories/mfsa2026-30/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-31/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-32/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-33/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2026-34/

Source: security@mozilla.org

Vendor Advisory

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

6.3 / 10.0

EPSS (Exploit Probability)

0.2%

5th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-290

Affected Vendors

mozilla

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