CVE-2021-23959: XSS
First published: Tue Jan 26 2021(Updated: )
An XSS bug in internal error pages could have led to various spoofing attacks, including other error pages and the address bar. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 85.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Firefox | <85 | 85 |
| Firefox | <85.0 |
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Reference Links
Peer vulnerabilities
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Frequently Asked Questions
What is the severity of CVE-2021-23959?
CVE-2021-23959 is classified as a moderate severity vulnerability due to its potential for spoofing attacks.
How do I fix CVE-2021-23959?
To fix CVE-2021-23959, update your Firefox for Android to version 85 or later.
Who is affected by CVE-2021-23959?
CVE-2021-23959 specifically affects users of Firefox for Android on versions prior to 85.
What type of vulnerability is CVE-2021-23959?
CVE-2021-23959 is an XSS (Cross-Site Scripting) vulnerability found in internal error pages of Firefox for Android.
Can I be attacked by CVE-2021-23959 on other operating systems?
No, CVE-2021-23959 only affects Firefox for Android, and other operating systems are not impacted.
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