CVE-2021-23959

EPSS 0.6%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

26 Feb 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

Mozilla · Firefox

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1659035 https://www.mozilla.org/security/advisories/mfsa2021-03/