CVE-2021-23976

EPSS 1.1%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

26 Feb 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020-26954 and only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 86.

Affected products

Mozilla · Firefox

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1684627 https://security.gentoo.org/glsa/202104-10 https://www.mozilla.org/security/advisories/mfsa2021-07/