CVE-2026-18534Network attack vector

UI spoofing via hidden address bar

Published Aug 18, 2026 · Updated Aug 18, 2026

UI spoofing in ArcSearch for iOS before 1.48.0 allows remote attackers to misrepresent browser chrome via page-initiated scrolling. The page-scroll handling path can leave the address bar hidden after attacker-controlled content triggers a scroll, letting web content occupy the top of the viewport and imitate trusted browser interface elements. Exploitation requires a user to load attacker-controlled content, and the published impact is limited to spoofed origin and browser-UI cues rather than code execution or service interruption.

CVSS severity7.4
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI spoofing in ArcSearch for iOS before 1.48.0 allows remote attackers to misrepresent browser chrome via page-initiated scrolling. The page-scroll handling path can leave the address bar hidden after attacker-controlled content triggers a scroll, letting web content occupy the top of the viewport and imitate trusted browser interface elements. Exploitation requires a user to load attacker-controlled content, and the published impact is limited to spoofed origin and browser-UI cues rather than code execution or service interruption.

The record

CVE
CVE-2026-18534
Published
Aug 18, 2026
Updated
Aug 18, 2026
Vendor
The Browser Company of New York
Product
Arc Search
Classifications
CWE-1021, CAPEC-506
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 18, 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=0 <1.48.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Browser Company of New York · Arc Searchversion=0 <1.48.0

Published CVSS scores

7.4BCNYCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
CAPEC-506Tapjacking

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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