CVE-2026-78980

Analyzed Analyzed - Analysis Complete

Improper Input Validation in Google Chrome ReaderMode

Publication date: 2026-08-25

Last updated on: 2026-08-28

Assigner: Chrome

Description

Improper input validation in ReaderMode in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass web origin policy into a privileged page via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-25

Last Modified

2026-08-28

Generated

2026-09-15

AI Q&A

2026-08-26

EPSS Evaluated

2026-09-14

NVD

CVE-2026-78980

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 152.0.7977.65 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper input validation in ReaderMode in Google Chrome before version 152.0.7977.65. A remote attacker could exploit this by using social engineering to trick a user into visiting a crafted HTML page, which bypasses the web origin policy and allows access to a privileged page.

Detection Guidance

This vulnerability involves improper input validation in Google Chrome's ReaderMode. Detection requires checking Chrome version and reviewing HTML pages for crafted content. No direct commands detect it, but updating Chrome and monitoring for suspicious HTML pages may help.

Impact Analysis

This vulnerability could allow an attacker to access privileged pages in your browser, potentially leading to unauthorized actions or data exposure. Social engineering is required, meaning attackers might use deceptive tactics to trick you into visiting a malicious page.

Compliance Impact

This vulnerability involves improper input validation in ReaderMode in Google Chrome, allowing bypass of web origin policy via crafted HTML. While not directly linked to compliance standards, such vulnerabilities could potentially impact GDPR by enabling unauthorized data access or HIPAA by exposing sensitive information if exploited in healthcare contexts.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.65 or later to address the improper input validation in ReaderMode.

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