CVE-2026-115889: wasmtime < 36.0.19, >= 37.0.0, < 43.0.0

CVE-2026-115889 affects wasmtime. CVSS 3.1 base score 9.9 (CRITICAL, Vendor/CNA). Affected range: < 36.0.19. Fixed version: 36.0.19. Affected range: >= 37.0.0, < 43.0.0. Fixed version: 43.0.0.

Affected technology

wasmtime · < 36.0.19, >= 37.0.0, < 43.0.0
bytecodealliance

Component: Not specified by the source
Function: with

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 9.9/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-197, CWE-843
Product: wasmtime
CCR priority: 39.6 /100 (P4)
CVSS 3.1: 9.9 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · Vendor/CNA
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-24 01:45:06.114611+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-115889.html