Vulnerability Description
Insufficient policy enforcement in extensions in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass site isolation via a crafted Chrome Extension.
CVSS Score
6.5
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 88.0.4324.96 | |
| Microsoft | Edge Chromium | < 88.0.705.50 |
Related Weaknesses (CWE)
References
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_Release NotesVendor Advisory
- https://crbug.com/1108126Permissions RequiredThird Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21126Third Party Advisory
- https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_Release NotesVendor Advisory
- https://crbug.com/1108126Permissions RequiredThird Party Advisory
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21126Third Party Advisory
FAQ
What is CVE-2021-21126?
CVE-2021-21126 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Insufficient policy enforcement in extensions in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass site isolation via a crafted Chrome Extension.
How severe is CVE-2021-21126?
CVE-2021-21126 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-21126?
Check the references section above for vendor advisories and patch information. Affected products include: Google Chrome, Microsoft Edge Chromium.