# CVE-2026-8951: Mozilla Firefox for Android spoofing in Toolbar

Source: https://junglewise.ai/threats/cve-2026-8951-mozilla-firefox-for-android-spoofing-in-toolbar  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-19. Updated: 2026-05-19  
License: CC BY 4.0 with a link back

CVE-2026-8951 · Severity: info · CVSS 4.3 · Published 2026-05-19

A spoofing vulnerability exists in the toolbar component of Firefox for Android. This flaw could allow a malicious website to misrepresent its identity or display misleading information in the browser's address bar area. An attacker could use this to trick users into providing sensitive information on a fraudulent site that appears legitimate.

Technologies: [Mozilla Firefox for Android](https://junglewise.ai/threats/technologies/firefox-for-android). Vendors: [Mozilla](https://junglewise.ai/threats/vendors/mozilla).

## Quick answers

**Is CVE-2026-8951 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8951 being exploited in the wild.

**How severe is CVE-2026-8951?** Informational severity, with a CVSS score of 4.3, published 19 May 2026.

**Which products and versions are affected?** Mozilla Firefox for Android < 151.

**Is there a fix for CVE-2026-8951?** 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-2026-8951 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-8951?** Check whether you run 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 spoofing vulnerability was identified in the Toolbar component of Firefox for Android. The flaw allows for the potential manipulation of the browser's user interface elements, specifically the address bar or toolbar area, to display incorrect origin information. While specific technical details regarding the root cause are restricted in the associated bug report, the impact is classified as 'moderate' by Mozilla. An attacker could leverage this to conduct phishing attacks by making a malicious site appear as a trusted domain. The vulnerability is addressed in Firefox for Android version 151.

## Affected products

- Mozilla Firefox for Android < 151

## Timeline

- 2026-05-19: disclosed
- 2026-05-19: advisory
- 2026-05-19: patched

## References

- [https://bugzilla.mozilla.org/show_bug.cgi?id=2018513](https://bugzilla.mozilla.org/show_bug.cgi?id=2018513)
- [https://www.mozilla.org/security/advisories/mfsa2026-46/](https://www.mozilla.org/security/advisories/mfsa2026-46/)

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- [Firefox Spoofing issue in Downloads component for Android](https://junglewise.ai/threats/cve-2026-118018-spoofing-issue-in-the-downloads-component-in-firefox-for-android)
- [Firefox for Android Downloads spoofing in filename display](https://junglewise.ai/threats/cve-2026-100823-spoofing-issue-in-the-downloads-component-in-firefox-for-android)
- [Mozilla Firefox for Android information disclosure in WebExtensions](https://junglewise.ai/threats/cve-2026-84127-mozilla-firefox-for-android-information-disclosure-in)
- [Mozilla Firefox for Android clickjacking in Downloads component](https://junglewise.ai/threats/cve-2026-74980-mozilla-firefox-for-android-clickjacking-in-downloads-component)