Medium severity5.7NVD Advisory· Published Oct 22, 2026· Updated Oct 22, 2026

CVE-2026-115390

Description

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.

Affected products

Bytecodealliance/Wasmtimellm-fuzzy
Range: <48.0.3, <49.0.1

Patches

Vulnerability mechanics

References

github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m63x-6p34-q65xnvd
www.vulncheck.com/advisories/wasmtime-47.0.0-before-48.0.3-and-49.0.0-before-49.0.1-fuel-accounting-bypass-dosnvd

News mentions

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cvss	0.371
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000