CVE-2026-20656

Local browsing-history disclosure via insufficient validation

Published Feb 11, 2026 · Updated Feb 11, 2026

Information disclosure in Safari before 26.3 allows local users to read a user's browsing history through a locally installed app. The Safari component on iOS, iPadOS, and macOS performs insufficient validation before releasing history data, but Apple has not disclosed the specific check or input involved. Execution requires a low-privileged local app and no user interaction; the documented consequence is history disclosure without data modification or service interruption.

CVSS severity3.3
Low
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Safari before 26.3 allows local users to read a user's browsing history through a locally installed app. The Safari component on iOS, iPadOS, and macOS performs insufficient validation before releasing history data, but Apple has not disclosed the specific check or input involved. Execution requires a low-privileged local app and no user interaction; the documented consequence is history disclosure without data modification or service interruption.

The record

CVE
CVE-2026-20656
Published
Feb 11, 2026
Updated
Feb 11, 2026
Vendor
Apple
Product
iOS and iPadOS
Classifications
CWE-285, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <18.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Apple · iOS and iPadOSversion=unspecified <18.7
Apple · Safariversion=unspecified <26.3
Apple · macOSversion=unspecified <26.3

Published CVSS scores

3.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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