Multiple prompts and panels from both Firefox and the Android OS could be used to obscure the notification announcing the transition to ful…

published 2024-09-03 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-49144

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 distros 1

Mozilla Firefox 130

firefox-esr openSUSE Tumbleweed 153.0-1.1
MozillaFirefox openSUSE Tumbleweed 130.0.1-1.1

opensuse advisories openSUSE-SU-2026:11373-1 openSUSE-SU-2024:14358-1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-09-03)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected products

Mozilla Firefox

Classification

Weakness

CWE-1021 Improper Restriction of Rendered UI Layers or Frames

References

mozilla.org /security/advisories/mfsa2024-39/
vendor-advisory
bugzilla.mozilla.org /buglist.cgi?bug_id=1839074%2C1865413%2C1868970%2C1873367%2C1877820%2C1884642%2C1886469%2C1894326%2C1894891%2C
broken-link
bugzilla.mozilla.org /show_bug.cgi?id=1902996
issue-tracking, permissions-required

Sources

CVE List CVE-2024-8388
NVD CVE-2024-8388

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary