CVE-2026-40393
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
13th
In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.
| CWE | CWE-787 |
| Vendor | mesa3d |
| Product | mesa |
| Published | Apr 12, 2026 |
| Last Updated | Apr 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
mesa3d / Mesa
0 < 25.3.6 26.0.0 < 26.0.1