CVE-2026-115380

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 45/100
Published: 2026-10-22 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: None
AT: None
VC: None
VI: None
VA: Low

Description

Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASI preview 0 poll_oneoff adapter, which performs O(n) host work per subscription without consuming or checking fuel. Malicious guest modules can pass many subscriptions to force long-running host computation that ignores configured fuel limits.

Weakness Classification (1)

Bug Bounty Relevance

45 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.1 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.12%
Raw Score 0.001180
Percentile 1.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00118
2026-10-28
0.00118

Intelligence Sources

mitre ref →
nvd ref →