CVE-2025-4664Known exploitationPublic exploitNetwork attack vector

Cross-origin data disclosure via Link-header referrer leakage

Published May 14, 2025 · Updated Jun 5, 2025

Policy enforcement failure in Google Chrome before 136.0.7103.113 allows remote attackers to leak cross-origin data via crafted HTML. The Loader resolves Link headers on subresource responses and sends follow-on requests with the full document URL in the Referer header, bypassing cross-origin referrer restrictions. A user must load the crafted page, after which secrets embedded in the initiating URL's path or query can reach an attacker-controlled origin.

CVSS severity4.3
Medium
EPSS probability5.63%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Policy enforcement failure in Google Chrome before 136.0.7103.113 allows remote attackers to leak cross-origin data via crafted HTML. The Loader resolves Link headers on subresource responses and sends follow-on requests with the full document URL in the Referer header, bypassing cross-origin referrer restrictions. A user must load the crafted page, after which secrets embedded in the initiating URL's path or query can reach an attacker-controlled origin.

The record

CVE
CVE-2025-4664
Published
May 14, 2025
Updated
Jun 5, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
CWE-693, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2025Record 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=136.0.7103.113 <136.0.7103.113

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=136.0.7103.113 <136.0.7103.113

Published CVSS scores

4.3NVDCVSS: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.

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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)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-693Protection Mechanism Failure
T1189Drive-by Compromise

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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