CVE-2018-18497

firefox: WebExtensions can load arbitrary URLs through pipe separators

Published Feb 28, 2019 CVSS 3.0 · 6.5 Medium EPSS 1.6% KEV · Not listed
Description
Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument. This could allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects Firefox < 64.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2018-10222 Limitations on the URIs allowed to WebExtensions by the browser.windows.create API can be bypassed when a pipe in the URL field is used within the extension to load multiple pages as a single argument. This could allow a malicious WebExtension to open privileged about: or file: locations. This vulnerability affects Firefox < 64.
Ubuntu USN Ubuntu USN USN-3844-1 Firefox vulnerabilities
History

No history.

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 5, 2024, 11:08 AM
Reserved
Oct 19, 2018, 12:00 AM
Status
Modified
Published
Feb 28, 2019, 6:29 PM
Modified
Jun 17, 2026, 1:47 AM
Severity
Moderate
Public date
Dec 11, 2018, 12:00 AM