CVE-2021-43531 (GCVE-0-2021-43531)
Vulnerability from cvelistv5
Published
2021-12-08 21:20
Modified
2024-08-04 03:55
Severity ?
CWE
  • Web Extensions could access pre-redirect URL when their context menu was triggered by a user
Summary
When a user loaded a Web Extensions context menu, the Web Extension could access the post-redirect URL of the element clicked. If the Web Extension lacked the WebRequest permission for the hosts involved in the redirect, this would be a same-origin-violation leaking data the Web Extension should have access to. This was fixed to provide the pre-redirect URL. This is related to CVE-2021-43532 but in the context of Web Extensions. This vulnerability affects Firefox < 94.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1659155Issue Tracking, Permissions Required, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2021-48/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1659155Issue Tracking, Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2021-48/Vendor Advisory
Impacted products
Vendor Product Version
Mozilla Firefox Version: unspecified   < 94
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