CVE-2026-81267

5.4 mediumEPSS 0.3%

Medium (5.4) in mozilla firefox mobile. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
CWE: CWE-451
Published: 2026-08-31
Modified: 2026-09-03
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox_mobile

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2052758
https://www.mozilla.org/security/advisories/mfsa2026-81/

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