Quick answers
- Is CVE-2026-8945 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-8945 being exploited in the wild.
- How severe is CVE-2026-8945?
- Informational severity, with a CVSS score of 8.8, published 19 May 2026.
- Which products and versions are affected?
- Mozilla Firefox Focus for Android < 151; Mozilla Firefox for Android < 151.
- Is there a fix for CVE-2026-8945?
- A patch was published on 2026-05-19. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-8945 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-8945?
- Check whether you run Mozilla Firefox Focus for Android or Mozilla Firefox for Android 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 sandbox escape vulnerability exists in Firefox and Firefox Focus for Android. While specific root cause details are restricted in the associated Bugzilla report (Bug 2003171), the vulnerability allows content running within the browser's restricted sandbox environment to bypass these protections and interact with the broader Android system. An attacker would typically exploit this by enticing a user to visit a specially crafted webpage. Successful exploitation could lead to arbitrary code execution outside of the browser process. The issue is addressed in Firefox 151.
Affected products
- Mozilla Firefox for Android < 151
- Mozilla Firefox Focus for Android < 151
Timeline
- 2026-05-19: disclosed
- 2026-05-19: advisory
- 2026-05-19: patched