CVE-2026-95297Network attack vectorHinoki check available

Web origin policy bypass

Published Sep 29, 2026 · Updated Sep 29, 2026

Missing authorization in Contextual Tasks in Google Chrome before 154.0.8037.57 allows remote attackers to bypass web origin policy via crafted HTML. Google has not disclosed which Contextual Tasks operation omits the authorization check or how the page crosses the origin boundary. The crafted page must be opened in a vulnerable browser; the published impact establishes an origin-policy bypass, not arbitrary code execution.

CVSS severity9.8
Critical
EPSS probability0.30%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing authorization in Contextual Tasks in Google Chrome before 154.0.8037.57 allows remote attackers to bypass web origin policy via crafted HTML. Google has not disclosed which Contextual Tasks operation omits the authorization check or how the page crosses the origin boundary. The crafted page must be opened in a vulnerable browser; the published impact establishes an origin-policy bypass, not arbitrary code execution.

The record

CVE
CVE-2026-95297
Published
Sep 29, 2026
Updated
Sep 29, 2026
Vendor
WebM Project
Product
Google Chrome
Classifications
CWE-862
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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=154.0.8037.57 <154.0.8037.57

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WebM Project · Google Chromeversion=154.0.8037.57 <154.0.8037.57

Published CVSS scores

9.0TenableAV:N/AC:L/Au:N/C:P/I:C/A:P
9.8TenableCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

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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