CVE-2021-43531 (GCVE-0-2021-43531)

Vulnerability from cvelistv5 – Published: 2021-12-08 21:20 – Updated: 2024-08-04 03:55
VLAI?
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.
Severity ?
No CVSS data available.
CWE
  • Web Extensions could access pre-redirect URL when their context menu was triggered by a user
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Affected: unspecified , < 94 (custom)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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