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Vulnerability record · CVE-2026-81267 · published 31 August 2026

CVE-2026-81267: Mozilla firefox mobile vulnerability

Mozilla · Firefox Mobile

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.

5.4 CVSS 3.1 Medium EPSS 0.26% · top 84.3% CWE-451 · CWE-451
5.4CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
3 Sep 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=2052758 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-81/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-81267), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.