Technology · Mozilla
Mozilla Firefox for iOS vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 10 vulnerabilities in Mozilla Firefox for iOS: 0 in the last 7 days and 4 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-86853, was published on 8 September 2026.
- Last 7 days
- 0
- Last 90 days
- 4
- Critical, all time
- 0
- Exploited in the wild
- 0
About Mozilla Firefox for iOS
A mobile web browser developed by Mozilla for the iOS operating system.
Latest Mozilla Firefox for iOS vulnerabilities
- CVE-2026-86853: Mozilla Firefox for iOS denial of service via URL schemesmediumCVSS 4.3EPSS 0.3%
- CVE-2026-81267: Mozilla Firefox for iOS address bar spoofing in popup navigationmediumCVSS 5.4EPSS 0.3%
- CVE-2026-14906: Mozilla Firefox for iOS sandbox file overwrite via malicious page titlesinfoCVSS 0
- CVE-2026-13356: Mozilla Firefox for iOS address bar origin spoofinginfoCVSS 0
- CVE-2026-53900: Mozilla Firefox for iOS cookie injection via PDF redirectinfoCVSS 7.5
- CVE-2026-53899: Mozilla Firefox for iOS cookie leakage in PDF requestsinfoCVSS 7.5
- CVE-2026-9309: Mozilla Firefox for iOS HTML injection in Reader View JSON-LD metadatainfoCVSS 8.8
- CVE-2026-9308: Mozilla Firefox for iOS JavaScript execution in Reader Viewinfo
- CVE-2026-9078: Mozilla Firefox for iOS address spoofing in link previewinfoEPSS 0.0%
- CVE-2026-8706: Mozilla Firefox for iOS data leak in Reader mode local web serverinfo
Most severe Mozilla Firefox for iOS vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-81267: Mozilla Firefox for iOS address bar spoofing in popup navigationmediumCVSS 5.4EPSS 0.3%
- CVE-2026-86853: Mozilla Firefox for iOS denial of service via URL schemesmediumCVSS 4.3EPSS 0.3%
- CVE-2026-9309: Mozilla Firefox for iOS HTML injection in Reader View JSON-LD metadatainfoCVSS 8.8
- CVE-2026-53900: Mozilla Firefox for iOS cookie injection via PDF redirectinfoCVSS 7.5
- CVE-2026-53899: Mozilla Firefox for iOS cookie leakage in PDF requestsinfoCVSS 7.5
- CVE-2026-14906: Mozilla Firefox for iOS sandbox file overwrite via malicious page titlesinfoCVSS 0
- CVE-2026-13356: Mozilla Firefox for iOS address bar origin spoofinginfoCVSS 0
- CVE-2026-9078: Mozilla Firefox for iOS address spoofing in link previewinfoEPSS 0.0%
- CVE-2026-9308: Mozilla Firefox for iOS JavaScript execution in Reader Viewinfo
- CVE-2026-8706: Mozilla Firefox for iOS data leak in Reader mode local web serverinfo
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 1 | 0 | |
| 13 Jul 2026 | 1 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 1 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/firefox-for-ios.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Mozilla Firefox for iOS vulnerabilities", https://junglewise.ai/threats/technologies/firefox-for-ios, 26 September 2026.