What’s Vulnerable › Vulnerabilities
CVE-2025-31266
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-11-21 · updated 2026-10-18
- Weakness: CWE-451
Description
A spoofing issue was addressed with improved truncation when displaying the fully qualified domain name. This issue is fixed in Safari 18.5, macOS Sequoia 15.5. A website may be able to spoof the domain name in the title of a pop-up window.
Affected products
- Apple macOS: before 15.5 — fixed in 15.5
- Apple Safari: before 18.5 — fixed in 18.5
How to fix
Upgrade to a fixed version: Apple macOS 15.5; Apple Safari 18.5. Check the vendor advisory for mitigations.
References
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