Vulnerability Description
A malicious webpage could have forced a Firefox for Android user into executing attacker-controlled JavaScript in the context of another domain, resulting in a Universal Cross-Site Scripting vulnerability. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected. Further details are being temporarily withheld to allow users an opportunity to update.*. This vulnerability affects Firefox < 88.0.1 and Firefox for Android < 88.1.3.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 88.0.1 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1701684Permissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-20/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1701684Permissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2021-20/Release NotesVendor Advisory
FAQ
What is CVE-2021-29953?
CVE-2021-29953 is a vulnerability with a CVSS score of 6.1 (MEDIUM). A malicious webpage could have forced a Firefox for Android user into executing attacker-controlled JavaScript in the context of another domain, resulting in a Universal Cross-Site Scripting vulnerabi...
How severe is CVE-2021-29953?
CVE-2021-29953 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-29953?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.