# CVE-2026-17703: Google Chrome for iOS navigation policy bypass

Source: https://junglewise.ai/threats/cve-2026-17703-google-chrome-for-ios-navigation-policy-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-30. Updated: 2026-07-30  
License: CC BY 4.0 with a link back

CVE-2026-17703 · Severity: info · CVSS 7.5 · Published 2026-07-30

A security vulnerability has been identified in Google Chrome for iOS, the popular web browser for iPhones and iPads. This flaw could allow a malicious website to bypass built-in navigation restrictions, potentially leading to unauthorized access to information or redirection to unintended sites. Users are advised to update their browser to the latest version to ensure these protections are enforced correctly.

Technologies: [Google Chrome for iOS](https://junglewise.ai/threats/technologies/chrome-for-ios). Vendors: [Google](https://junglewise.ai/threats/vendors/google).

## Quick answers

**Is CVE-2026-17703 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17703 being exploited in the wild.

**How severe is CVE-2026-17703?** Informational severity, with a CVSS score of 7.5, published 30 July 2026.

**Which products and versions are affected?** Google Chrome for iOS prior to 151.0.7922.72.

**Is there a fix for CVE-2026-17703?** A patch was published on 2026-07-29: Fixed in version 151.0.7922.72 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-17703 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-17703?** Check whether you run Google Chrome for iOS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A policy bypass vulnerability exists in Google Chrome for iOS due to insufficient enforcement of navigation restrictions. A remote attacker can exploit this by enticing a user to visit a specially crafted HTML page. Successful exploitation allows the attacker to bypass security policies governing how the browser navigates between pages or handles specific URL schemes. This issue was addressed in version 151.0.7922.72. The vulnerability is categorized as 'High' severity by the Chromium project.

## Affected products

- Google Chrome for iOS prior to 151.0.7922.72

## Timeline

- 2026-05-30: disclosed: Reported by Google internal team
- 2026-07-29: patched: Fixed in version 151.0.7922.72
- 2026-07-30: advisory: NVD publication date

## References

- [https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html](https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html)
- [https://issues.chromium.org/issues/518051499](https://issues.chromium.org/issues/518051499)

## Related threats

- [Google Chrome for iOS UI spoofing via crafted HTML page](https://junglewise.ai/threats/cve-2026-18013-google-chrome-for-ios-ui-spoofing-via-crafted-html-page)
- [Google Chrome for iOS UI spoofing via crafted HTML page](https://junglewise.ai/threats/cve-2026-18003-google-chrome-for-ios-ui-spoofing-via-crafted-html-page)
- [Google Chrome for iOS use after free heap corruption](https://junglewise.ai/threats/cve-2026-17967-google-chrome-for-ios-use-after-free-heap-corruption)
- [Google Chrome for iOS no-referrer policy bypass](https://junglewise.ai/threats/cve-2026-17960-google-chrome-for-ios-no-referrer-policy-bypass)
- [Google Chrome for iOS navigation restriction bypass](https://junglewise.ai/threats/cve-2026-17944-google-chrome-for-ios-navigation-restriction-bypass)