CVE-2021-38497

Mozilla: Validation message could have been overlaid on another origin

Published Nov 3, 2021 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

Analysis

No analysis available yet

Remediation

No remediation available yet

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-24949 Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.
Ubuntu USN Ubuntu USN USN-5107-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-5132-1 Thunderbird vulnerabilities
Ubuntu USN Ubuntu USN USN-5248-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00181}

epss

{'score': 0.00253}

Weaknesses
  • CWE-1021

    Improper Restriction of Rendered UI Layers or Frames

  • CWE-346

    Origin Validation Error

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 4, 2024, 1:44 AM
Reserved
Aug 10, 2021, 12:00 AM
Status
Modified
Published
Nov 3, 2021, 1:15 AM
Modified
Jun 17, 2026, 4:02 AM
Severity
Moderate
Public date
Oct 5, 2021, 12:00 AM