Quick answers
- Is CVE-2026-118018 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-118018 being exploited in the wild.
- How severe is CVE-2026-118018?
- Informational severity, published 27 October 2026.
- Which products and versions are affected?
- Mozilla Firefox for Android.
- Is there a fix for CVE-2026-118018?
- Yes: fixed in Firefox 159. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-118018 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-118018?
- Check whether you run Mozilla Firefox for Android. 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.
How to fix
- Fixed in: Firefox 159
Technical details
A spoofing issue in Firefox for Android's Downloads component allows an attacker to manipulate how downloaded content is presented to the user, potentially misrepresenting file origin or source. The vulnerability requires user interaction (downloading a file) but does not require authentication or special network positioning. Exploitation results in user deception rather than code execution or data exfiltration.
Affected products
- Mozilla Firefox for Android
Timeline
- 2026-10-27: disclosed
- 2026-10-27: patched: Firefox 159 release