CVE-2022-31744

Mozilla: CSP bypass enabling stylesheet injection

Published Dec 22, 2022 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11, Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3064-1 firefox-esr security update
Debian DSA Debian DSA DSA-5172-1 firefox-esr security update
Debian DSA Debian DSA DSA-5175-1 thunderbird security update
EUVD EUVD EUVD-2022-53142 An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11, Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101.
Ubuntu USN Ubuntu USN USN-5475-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-5512-1 Thunderbird vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.0006}

epss

{'score': 0.00062}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Apr 15, 2025, 6:29 PM
Reserved
May 26, 2022, 12:00 AM
Status
Modified
Published
Dec 22, 2022, 8:15 PM
Modified
Jun 17, 2026, 4:46 AM
Severity
Moderate
Public date
Jun 28, 2022, 12:00 AM