CVE-2026-115385
Published:October 22, 2026
Updated:October 23, 2026
Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASIp3 implementation that allows guests to abort the Unix host process. Guests with mutable preopened directory access can call set-times or set-times-at with negative seconds timestamps before the epoch, triggering an assertion failure that crashes the host.
Affected Packages
https://github.com/bytecodealliance/wasmtime.git (GITHUB):
Affected version(s) >=v49.0.0 <v49.0.2Fix Suggestion:
Update to version v49.0.2https://github.com/bytecodealliance/wasmtime.git (GITHUB):
Affected version(s) >=v48.0.0 <v48.0.4Fix Suggestion:
Update to version v48.0.4wasmtime-wasi (RUST):
Affected version(s) >=48.0.0 <48.0.4Fix Suggestion:
Update to version 48.0.4wasmtime-wasi (RUST):
Affected version(s) >=49.0.0 <49.0.2Fix Suggestion:
Update to version 49.0.2Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.2
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Check for Unusual or Exceptional Conditions