CVE-2026-3846

MEDIUM EPSS 1.6%
Published Mar 10, 20263mo ago · Modified Jun 17, 20261w ago
6.5 CVSS 3.1
Medium
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Published Mar 10, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 148.0.2.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
1.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-346

Affected Products 1

VendorProductVersionRange
mozillafirefox* <148.0.2

References 2

  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=2018400
    Permissions Required
  • mozilla.org https://www.mozilla.org/security/advisories/mfsa2026-19/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.