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CVE-2026-86898

MEDIUM
5.4
CVSS Score
Published: September 14, 2026 at 08:50 PM UTC
Updated: October 26, 2026 at 08:41 PM UTC
5 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A logic issue was addressed with improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27. Opening a maliciously crafted webarchive file may lead to universal cross-site scripting.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

iPadOS· Apple
95%
v < 27.0
Affected range stops below 27, so it looks safe — our inference, not a vendor statement
Affected range stops below 27.0, so it looks safe — our inference, not a vendor statement
iPhone OS· Apple
95%
v < 27.0
Affected range stops below 27.0, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 27.0
Affected range stops below 27, so it looks safe — our inference, not a vendor statement
Affected range stops below 27.0, so it looks safe — our inference, not a vendor statement
Safari· Apple
95%
v < 27.0
Affected range stops below 27, so it looks safe — our inference, not a vendor statement
Affected range stops below 27.0, so it looks safe — our inference, not a vendor statement
visionOS· Apple
95%
v < 27.0
Affected range stops below 27, so it looks safe — our inference, not a vendor statement
Affected range stops below 27.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/149034
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/149035
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/149038
Release NotesVendor Advisory
Source: cverecord
https://support.apple.com/en-us/149039

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUM134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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