Dashboard / CVE-2026-115383

CVE-2026-115383

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 52/100
Published: 2026-10-22 Modified: 2026-10-22 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Passive
S: X
AT: Present
VC: None
VI: None
VA: High

Description

Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains an improper validation vulnerability that accepts components whose core modules import WebAssembly tags with a subtype of the original type. Malicious guests can mis-type exception object payloads to corrupt the GC heap, causing Wasmtime to panic when the exceptions proposal is enabled.

Weakness Classification (1)

References & Advisories (2)

Bug Bounty Relevance

52 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

5.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.18%
Raw Score 0.001840
Percentile 7.9%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00184
2026-10-28
0.00184

Intelligence Sources

nvd ref →

External Links