CVE-2026-5918Network attack vector

Cross-origin data disclosure after renderer compromise

Published Apr 8, 2026 · Updated Apr 8, 2026

Information disclosure in Navigation in Google Chrome before 147.0.7727.55 allows remote attackers to leak cross-origin data. Google has not published the faulty Navigation operation because the referenced Chromium issue remains access-restricted. Exploitation requires a crafted HTML page, user interaction, and prior compromise of the renderer process; the reported consequence is cross-origin data disclosure only.

CVSS severity4.3
Medium
EPSS probability0.16%
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 Navigation in Google Chrome before 147.0.7727.55 allows remote attackers to leak cross-origin data. Google has not published the faulty Navigation operation because the referenced Chromium issue remains access-restricted. Exploitation requires a crafted HTML page, user interaction, and prior compromise of the renderer process; the reported consequence is cross-origin data disclosure only.

The record

CVE
CVE-2026-5918
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-346, CWE-352
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=147.0.7727.55 <147.0.7727.55

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Go standard library · Google Chromeversion=147.0.7727.55 <147.0.7727.55

Published CVSS scores

4.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-346Origin Validation Error
CWE-352Cross-Site Request Forgery (CSRF)

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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