VulnerabilityModified
CVE-2026-28861
A malicious website may be able to access script message handlers intended for other origins.
MEDIUM 4.3EPSS 0.31%
Does this matter?
Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own.
Description
A logic issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. A malicious website may be able to access script message handlers intended for other origins.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
- EPSS
- 0.31% probability · 24th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79, CWE-346
- Affected
- apple/safari · apple/ipados · apple/iphone os · apple/macos · apple/visionos
- Source
- product-security@apple.com
References
- https://support.apple.com/en-us/126792Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126793Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126794Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126799Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126800Release Notes, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-28861
- https://bugzilla.redhat.com/show_bug.cgi?id=2453007
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28861.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.