CVE-2026-34988

medium Red Hat
CVSS v3 Base Score
5.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Published: April 9, 2026 (34 days ago)
Last Modified: April 9, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in Wasmtime, a runtime for WebAssembly. When Wasmtime's pooling allocator is configured with specific settings, it fails to properly reset virtual memory permissions. This oversight allows a malicious WebAssembly instance to read sensitive data from the linear memory of a previously executed instance. This vulnerability can lead to information disclosure, compromising the isolation and security sandbox provided by Wasmtime.

CWE

CWE-825

Affected Products

Red Hat Connectivity Link 1Red Hat Enterprise Linux 10

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 github.com