Information leak in ServiceWorker in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain cross-origin data via a crafted HTML… (CVE-2026-87574)
Source GCVE Database
Not known to be exploited.
Data as of 10/25/2026, 04:40:14 UTC
CVSS not yet scored by NVD
- Exploitation
Not in CISA KEV, no exploitation reported
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
What to do
AI-suggested
Users and administrators should monitor official Google Chrome security advisories for updates and apply the official fix once available. Until then, cautious browsing and limiting exposure to untrusted web content may reduce risk.
Description
An information leak vulnerability exists in the ServiceWorker component of Google Chrome versions prior to 153.0.8010.36. This flaw allows a remote attacker to obtain cross-origin data by leveraging a crafted HTML page. The vulnerability is classified with medium severity by the Chromium security team. No public exploits are known, and no patch information is provided in the available data.
Impact
The vulnerability allows unauthorized disclosure of cross-origin data, potentially exposing sensitive information to remote attackers. This could undermine user privacy and security by leaking data that should be isolated by browser security policies. However, the severity is rated medium, indicating the impact is significant but not critical.
Summary
CVE-2026-87574 is an information disclosure vulnerability in the ServiceWorker implementation of Google Chrome before version 153.0.8010.36. It enables a remote attacker to access data from other origins by exploiting a crafted HTML page, violating the same-origin policy. The vulnerability is identified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). There is no CVSS score or detailed vendor advisory available in the provided data, and no explicit patch or remediation status is stated.
Weaknesses
- CWE-200Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #20OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.