CVE-2026-121170
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Improper Resource Control in Google Chrome WebCodecs

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description
Improper resource control in WebCodecs in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

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Meta Information

Published
2026-11-03
Last Modified
2026-11-03
Generated
2026-11-04
AI Q&A
2026-11-04
EPSS Evaluated
N/A
NVD
CVE-2026-121170
EUVD
EUVD-2026-116476

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Google Chrome 157.0.8103.38

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-913 The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.

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Executive Summary

This vulnerability involves improper resource control in WebCodecs within Google Chrome versions before 157.0.8103.38. A remote attacker could exploit a crafted HTML page to bypass the web origin policy, potentially accessing or manipulating resources outside intended boundaries.

Impact Analysis

If exploited, this flaw could allow attackers to access sensitive data from different websites, perform unauthorized actions on your behalf, or compromise your browsing session. Users of unpatched Chrome versions are at risk.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the vulnerability.

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