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VULNERABILITIES

CVE-2021-23959 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://bugzilla.mozilla.org/show_bug.cgi?id=1659035 CVEIssue TrackingPermissions RequiredVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/ CVERelease NotesVendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1659035 [email protected]Issue TrackingPermissions RequiredVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/ [email protected]Release NotesVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
mozilla firefox
< 85.0

CPE

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-23959
NVD Published Date:
Feb 26, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-23959 Details - Not Deferred