CVE-2026-2634 json
Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS
published 2026-02-24 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-8446
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.
Patch / fix
- mozilla firefox 147.4
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Mozilla Firefox for iOS
Classification
- Weakness
-
- CWE-451 User Interface (UI) Misrepresentation of Critical Information
References
-
mozilla.org
/security/advisories/mfsa2026-12/
vendor-advisory
-
bugzilla.mozilla.org
/show_bug.cgi?id=1975529
issue-tracking, permissions-required
Sources
- CVE List CVE-2026-2634
- NVD CVE-2026-2634
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.