AI description
Automated description summarized from trusted sources.
CVE-2026-16381 is a vulnerability identified in Mozilla Firefox, categorized as a same-origin policy bypass within the browser's Networking: DNS component. This flaw involves the manipulation of an unspecified part of the DNS component, leading to a cross-domain policy vulnerability. The issue is known to affect confidentiality. The vulnerability was addressed in Firefox version 153 and Firefox ESR 140.13. Exploitation of CVE-2026-16381 can be carried out remotely and requires some form of user interaction.
- Description
- Same-origin policy bypass in the Networking: DNS component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
- Source
- security@mozilla.org
- NVD status
- Undergoing Analysis
CVSS 3.1
- Type
- Secondary
- Base score
- 9.1
- Impact score
- 5.2
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Severity
- CRITICAL
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
- CWE-346
Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.
- Hype score
16