# CVE-2026-17873: Google Chrome for iOS discretionary access control bypass

Source: https://junglewise.ai/threats/cve-2026-17873-google-chrome-for-ios-discretionary-access-control-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-2026-17873 · Severity: info · CVSS 4.3 · Published 2026-07-30

A security vulnerability has been identified in Google Chrome for iOS, the mobile web browser used on iPhones and iPads. An attacker could use a specially designed website to bypass security controls that normally restrict access to certain data or functions. This could allow unauthorized actions to be performed within the browser context, potentially compromising the integrity of the user's browsing session.

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-2026-17873 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-17873 being exploited in the wild.

**How severe is CVE-2026-17873?** Informational severity, with a CVSS score of 4.3, 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-2026-17873?** A patch was published on 2026-07-29: Stable channel update released for desktop and iOS versions. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-17873 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-17873?** 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

This vulnerability is classified as an insufficient policy enforcement flaw within the Chrome for iOS component. The root cause is a failure to properly validate or enforce discretionary access control (DAC) policies when processing web content. A remote attacker can exploit this by enticing a user to visit a maliciously crafted HTML page. Successful exploitation allows the attacker to bypass intended access restrictions, though the impact is limited to the browser's internal policy enforcement. The issue is resolved in Google Chrome for iOS version 151.0.7922.72.

## Affected products

- Google Chrome for iOS prior to 151.0.7922.72

## Timeline

- 2026-07-29: patched: Stable channel update released for desktop and iOS versions.
- 2026-07-30: disclosed: 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/522074033](https://issues.chromium.org/issues/522074033)

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