Development Tools panels of an extension are required to load URLs for the panels as relative URLs from the extension manifest file but this requirement was not enforced in all instances. This could allow the development tools panel for the extension to load a URL that it should not be able to access, including potentially privileged pages. This vulnerability affects Firefox < 58.

Related CVEs

CVE-2018-5112

Key Information

GHSA ID

GHSA-953p-grm5-8vpv

Published

May 13, 2022 1:52 AM

Last Modified

May 13, 2022 1:52 AM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: September 15, 2025 6:32 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.