{"id":"CVE-2026-115390","aliases":["RUSTSEC-2026-0315","GHSA-m63x-6p34-q65x"],"title":"`call_ref` and exception `catch` can drop some fuel accounting, leading to exponential fuel amplification","summary":"`call_ref` and exception `catch` can drop some fuel accounting, leading to exponential fuel amplification","severity":"medium","cvss":5.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","vendor":"wasmtime","product":"wasmtime","ecosystem":"rust","affected":["wasmtime >= 49.0.0, < 49.0.1"],"patched":["wasmtime 49.0.1"],"published":"2026-09-24","updated":"2026-10-24","sourceUpdated":"2026-10-24T06:25:41Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0315","references":[{"url":"https://crates.io/crates/wasmtime"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0315.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/14407"},{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m63x-6p34-q65x","label":"GitHub Security Advisory (GHSA-m63x-6p34-q65x)"},{"url":"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","label":"VulnCheck Advisory: Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS"}],"tags":["osv","rust","cve.org"],"epss":0.00242,"epssPercentile":0.15326,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-23T14:48:31.982167Z"},"cwe":["CWE-400"],"ingestedAt":"2026-10-22T22:00:50.405Z","slug":"CVE-2026-115390","body":"## Overview\n\nThis is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m63x-6p34-q65x\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime >= 49.0.0, < 49.0.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime 49.0.1`","depth":"sunlit","depthScore":31,"depthScoreParts":{"impact":31.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}