CVE-2026-0237: Palo Alto Networks Prisma Browser security bypass in automation bridge

CVE-2026-0237 · Severity: high · CVSS 7.8 · Published 2026-05-13

Palo Alto Networks Prisma Browser is an enterprise-grade web browser designed for secure corporate access. A security flaw in the macOS version of this browser allows a standard user on a computer to bypass security restrictions and send unauthorized commands to the browser's internal systems. This could allow an attacker with local access to the machine to circumvent corporate security controls and potentially access sensitive data or perform unauthorized actions within the browser.

Technologies: Apple macOS, Palo Alto Networks Prisma Browser. Vendors: Apple, Palo Alto Networks.

Quick answers

Is CVE-2026-0237 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-0237 being exploited in the wild.
How severe is CVE-2026-0237?
High severity, with a CVSS score of 7.8, published 13 May 2026.
Which products and versions are affected?
Palo Alto Networks Prisma Browser < 146.16.6.165, macOS versions.
Is there a fix for CVE-2026-0237?
A patch was published on 2026-05-13: Fix released in version 146.16.6.165 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-0237 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2026-0237?
Check whether you run Apple macOS or Palo Alto Networks Prisma Browser 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

An improper protection of alternate path vulnerability (CWE-424) exists in Palo Alto Networks Prisma Browser for macOS. The flaw resides in the failure to properly restrict access to an internal automation bridge, which serves as a communication channel for browser operations. A locally authenticated non-admin user can exploit this exposed channel to send unauthorized commands directly to the browser. This allows the attacker to bypass established security controls and potentially achieve full compromise of the browser session. The vulnerability is addressed in Prisma Browser version 146.16.6.165 and later.

Affected products

  • Palo Alto Networks Prisma Browser < 146.16.6.165

Timeline

  • 2026-05-13: disclosed: Initial publication of the advisory
  • 2026-05-13: patched: Fix released in version 146.16.6.165

References

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