CVE-2024-8388

Name: CVE-2024-8388
Creator: NVD / NIST
Published: 2024-09-03T13:15:05.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2024-8388 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Multiple prompts and panels from both Firefox and the Android OS could be used to obscure the notification announcing the transition to fullscreen mode after the fix for CVE-2023-6870 in Firefox 121. This could lead to spoofing the browser UI if the sudden appearance of the prompt distracted the user from noticing the visual transition happening behind the prompt. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

Multiple prompts and panels from both Firefox and the Android OS could be used to obscure the notification announcing the transition to fullscreen mode after the fix for CVE-2023-6870 in Firefox 121. This could lead to spoofing the browser UI if the sudden appearance of the prompt distracted the user from noticing the visual transition happening behind the prompt. These notifications now use the Android Toast feature. *This bug only affects Firefox on Android. Other operating systems are unaffected.* This vulnerability affects Firefox < 130.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.34%

26.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1021

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 130.0

References

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1839074%2C1865413%2C1868970%2C1873367%2C1877820%2C1884642%2C1886469%2C1894326%2C1894891%2C1897648Broken Link
https://bugzilla.mozilla.org/show_bug.cgi?id=1902996Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2024-39/Vendor Advisory

Timeline

Published: Sep 3, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-8388?

How severe is CVE-2024-8388?

CVE-2024-8388 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2024-8388?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-8388?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST