Quick answers
- Is CVE-2026-74951 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-74951 being exploited in the wild.
- How severe is CVE-2026-74951?
- Medium severity, with a CVSS score of 6.5, published 18 August 2026.
- Which products and versions are affected?
- Mozilla Firefox before 154.
- Is there a fix for CVE-2026-74951?
- A patch was published on 2026-08-18: Fixed in Firefox 154 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-74951 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-74951?
- Check whether you run Mozilla Firefox or Mozilla Firefox Mobile 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
CVE-2026-74951 is a clickjacking vulnerability in Firefox for Android. The vulnerability stems from insufficient protection against UI redressing attacks where an attacker can overlay transparent or disguised malicious content over legitimate webpage elements. The attack requires network access and user interaction (the user must be tricked into clicking). An attacker can leverage this to hijack user actions such as permission grants, file downloads, or navigation to malicious sites. Mozilla fixed this vulnerability in Firefox 154, released on 2026-08-18.
Affected products
- Mozilla Firefox before 154
Timeline
- 2026-08-18: disclosed
- 2026-08-18: patched: Fixed in Firefox 154