CVE-2026-2634

critical · 9.8

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.

9.8

CVSS

0.3%

EPSS (exploit prob.)

24th

EPSS percentile

2026-02-24

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-451

Affected products

Vendor	Product	Affected versions
mozilla	firefox	< 147.4

Check a specific version with /api/v1/cve/match.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1975529
https://www.mozilla.org/security/advisories/mfsa2026-12/

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-2634