CVE-2026-115390CWE-400denial-of-service

CVE-2026-115390

Medium · published October 22, 2026

CVSS v3.1
5.7
EPSS
0%
Percentile
7.6
In the wild
Unconfirmed
What it is

Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 contains a fuel accounting flaw in Cranelift-compiled call_ref and try_table catch paths. Malicious guests can reset consumed fuel after calls to run exponentially long on linear fuel, evading timeouts and periodic yields for denial of service.

The record
Technical detail
CVSS v3.1
5.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00184 · 7.6th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-10-22T23:17Z
References (2)
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m63x-6p34-q65x · [email protected]https://www.vulncheck.com/advisories/wasmtime-47.0.0-before-48.0.3-and-49.0.0-before-49.0.1-fuel-accounting-bypass-dos · [email protected]
EPSS history
Timeline
  • 24 OCT 03:52Z
    EPSS moved — → 0%
    epss
  • 22 OCT 19:13Z
    Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS
    cvelistv5
  • 22 OCT 19:13Z
    Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS
    cvelistv5