Quick answers
- Is CVE-2026-74975 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-74975 being exploited in the wild.
- How severe is CVE-2026-74975?
- Medium severity, with a CVSS score of 5.4, published 18 August 2026.
- Which products and versions are affected?
- Mozilla Firefox for Android before 154.
- Is there a fix for CVE-2026-74975?
- A patch was published on 2026: Fixed in Firefox 154 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-74975 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-74975?
- Check whether you run Mozilla Firefox for Android 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
This is a spoofing vulnerability in the Downloads component of Firefox for Android caused by improper UI overlay handling. The download confirmation notification dialog fails to disappear when the user navigates to a different origin, allowing an attacker to display a download prompt on top of legitimate site content. An attacker can craft a malicious page that initiates a download, then automatically redirects to a popular website (such as Google) while keeping the download notification visible, leading the user to believe the notification originates from the legitimate site. The vulnerability requires user interaction (clicking a link) but no authentication. The issue was fixed in Firefox 154.
Affected products
- Mozilla Firefox for Android before 154
Timeline
- 2026-08-18: disclosed
- 2026: patched: Fixed in Firefox 154