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CVE-2021-23959

Date: February 25, 2021

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.

Severity Score

Related Resources (5)

https://bugzilla.mozilla.org/show_bug.cgi?id=1659035
https://nvd.nist.gov/vuln/detail/CVE-2021-23959
https://www.mozilla.org/security/advisories/mfsa2021-03/
https://security.alpinelinux.org/vuln/CVE-2021-23959
https://www.mend.io/vulnerability-database/CVE-2021-23959

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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