CVE-2023-25730

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 61/100
Published: 2023-06-02 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: Low
I: Low
A: None

Description

A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
mozilla firefox < 110.0
mozilla firefox_esr < 102.8
mozilla thunderbird < 102.8

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

5.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.55%
Raw Score 0.005460
Percentile 45.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00546
2026-10-28
0.00546

Intelligence Sources

nvd ref →