CVE-2026-17955
Summary
by MITRE • 07/30/2026
Insufficient validation of untrusted input in Payments in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a critical weakness in Chrome's input validation mechanisms specifically within the payments handling subsystem, where insufficient sanitization of untrusted data creates opportunities for malicious actors to manipulate user interfaces. The flaw exists in versions prior to 151.0.7922.72 and enables remote attackers to execute UI spoofing attacks through carefully crafted HTML pages that exploit the browser's inadequate validation of payment-related input fields. Such vulnerabilities fall under the broader category of input validation failures that can lead to various security exploits including cross-site scripting and user interface manipulation.
The technical implementation of this vulnerability stems from Chrome's failure to properly validate and sanitize untrusted input within its payment processing components, particularly when handling HTML content that may contain malicious scripts or styling elements. Attackers can craft HTML pages containing specially designed markup that bypasses normal validation checks, allowing them to manipulate the appearance and behavior of payment interfaces. This creates opportunities for phishing attacks where users might be tricked into entering sensitive information on what appears to be legitimate payment forms but are actually maliciously constructed interfaces.
The operational impact of this vulnerability extends beyond simple UI manipulation as it undermines user trust in the browser's security mechanisms and creates potential pathways for more serious financial fraud. Users interacting with compromised payment interfaces may unknowingly provide personal information, payment details, or authentication credentials to attackers who have successfully spoofed legitimate payment portals. The low severity classification according to Chromium security standards does not diminish the practical implications for users who may be targeted through social engineering campaigns that leverage this vulnerability.
Organizations and individual users should prioritize updating their Chrome browsers to version 151.0.7922.72 or later to mitigate this risk, as the vulnerability directly affects payment processing security. Security teams should monitor for potential exploitation attempts targeting this specific flaw in environments where users may be exposed to untrusted web content. The vulnerability aligns with CWE-20, which addresses "Improper Input Validation," and represents a specific instance of how inadequate validation can enable user interface manipulation attacks. From an ATT&CK framework perspective, this vulnerability could be leveraged as part of the T1059.001 technique for executing malicious code through web-based interfaces, potentially supporting initial access or privilege escalation scenarios in targeted attack campaigns.