CVE-2026-81267CWE-451

CVE-2026-81267

Medium · published September 1, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
16.5
In the wild
Unconfirmed
What it is

A malicious webpage could stall a popup's cross-origin navigation after commit, causing the address bar to display the destination origin while continuing to render attacker-controlled content. This vulnerability was fixed in Firefox for iOS 155.0.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00257 · 16.5th percentile
Weakness
CWE-451 · User Interface (UI) Misrepresentation of Critical Information
Published
2026-09-01T00:17Z
Affected products (1)
ProductVersionsFixed in
mozilla/firefox_mobile< 155.0155.0
References (2)
https://bugzilla.mozilla.org/show_bug.cgi?id=2052758 · [email protected]https://www.mozilla.org/security/advisories/mfsa2026-81/ · [email protected]
EPSS history
Timeline
  • 02 SEP 03:39Z
    EPSS moved — → 0%
    epss
  • 31 AUG 19:37Z
    Stalled popup navigation could allow address bar origin spoofing in Firefox for iOS
    cvelistv5