4.3
CVE-2021-43531
- EPSS 0.14%
- Published 08.12.2021 22:15:09
- Last modified 21.11.2024 06:29:22
- Source security@mozilla.org
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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.
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.14% | 0.303 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 4.3 | 2.8 | 1.4 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
|
| nvd@nist.gov | 4.3 | 8.6 | 2.9 |
AV:N/AC:M/Au:N/C:P/I:N/A:N
|
CWE-346 Origin Validation Error
The product does not properly verify that the source of data or communication is valid.