CVE-2026-17929 in Chrome
Summary
by MITRE • 07/30/2026
Insufficient validation of untrusted input in DevTools in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to bypass navigation restrictions via a malicious file. (Chromium security severity: Low)
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a critical input validation weakness in the Chrome DevTools component that affected versions prior to 151.0.7922.72. The flaw resides in how DevTools processes untrusted input from potentially malicious sources, specifically manifesting during navigation restriction bypass scenarios. The vulnerability stems from inadequate sanitization and validation of file paths or URLs that DevTools receives from external sources, creating a potential attack vector for remote adversaries seeking to circumvent intended security boundaries.
The technical implementation of this weakness allows an attacker to craft a malicious file that, when processed by Chrome DevTools, can manipulate navigation behavior and potentially redirect users to unintended destinations. This occurs because the validation logic fails to properly inspect or sanitize input parameters before they are used in navigation operations within the DevTools interface. The vulnerability operates at the intersection of input handling and security boundary enforcement, where untrusted data flows through DevTools without sufficient verification mechanisms.
From an operational perspective, this vulnerability presents a low severity risk according to Chromium's classification but maintains significant implications for user safety and system integrity. Attackers could potentially exploit this weakness to perform phishing attacks, redirect users to malicious websites, or manipulate the browsing experience in ways that compromise user trust and security expectations. The remote nature of the attack means that users need not interact directly with malicious content; simply having Chrome DevTools process a crafted file could trigger the vulnerability.
The vulnerability aligns with CWE-20, which addresses "Improper Input Validation," and demonstrates how insufficient validation can lead to security bypasses in development tools that are often trusted components within browser ecosystems. Security researchers have identified this issue as part of broader patterns where development and debugging tools receive insufficient protection against malicious input due to their typically elevated privileges and access to system resources. The ATT&CK framework would categorize this under T1211, "Exploitation for Defense Evasion," as it enables attackers to bypass intended navigation restrictions that serve security purposes.
Mitigation strategies should focus on immediate version updates to Chrome 151.0.7922.72 or later where the vulnerability has been addressed through enhanced input validation mechanisms. Organizations should also implement network-level protections such as content filtering and web application firewalls to reduce exposure to malicious file delivery. Additionally, security awareness training for developers about the risks of processing untrusted files in DevTools environments can help prevent accidental exploitation through social engineering or compromised development workflows. The fix typically involves strengthening input sanitization routines and implementing stricter validation checks on file paths and URLs before they are processed by DevTools components.