{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-115390", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-22T11:27:18.001Z", "datePublished": "2026-10-22T19:13:55.910Z", "dateUpdated": "2026-10-22T19:13:55.910Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-22T19:13:55.910Z"}, "datePublic": "2026-09-24T00:00:00.000Z", "title": "Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Uncontrolled Resource Consumption", "cweId": "CWE-400", "type": "CWE"}]}], "affected": [{"vendor": "bytecodealliance", "product": "wasmtime", "defaultStatus": "unaffected", "packageURL": "pkg:cargo/wasmtime", "versions": [{"version": "47.0.0", "status": "affected", "versionType": "semver", "lessThan": "48.0.3"}, {"version": "48.0.3", "status": "unaffected", "versionType": "semver"}, {"version": "49.0.0", "status": "affected", "versionType": "semver", "lessThan": "49.0.1"}, {"version": "49.0.1", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*", "versionStartIncluding": "47.0.0", "versionEndExcluding": "48.0.3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*", "versionStartIncluding": "49.0.0", "versionEndExcluding": "49.0.1"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6.9, "baseSeverity": "MEDIUM"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 5.7, "baseSeverity": "MEDIUM"}}], "references": [{"url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m63x-6p34-q65x", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-m63x-6p34-q65x)"}, {"name": "VulnCheck Advisory: Wasmtime 47.0.0 before 48.0.3 and 49.0.0 before 49.0.1 Fuel Accounting Bypass DoS", "tags": ["third-party-advisory"], "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"}], "credits": [{"lang": "en", "value": "fitzgen", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{"bugzilla": {"description": "wasmtime: wasmtime: Denial of Service via fuel accounting flaw", "id": "2559257", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559257"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Wasmtime. This vulnerability allows an untrusted guest program to cause a Denial of Service (DoS) by bypassing execution limits. Due to an accounting flaw in Cranelift-compiled execution paths, a guest can reset consumed execution units (known as fuel) after specific function calls. Consequently, the guest module can run far longer than allocated, evading timeouts and exhausting host computing resources."], "name": "CVE-2026-115390", "package_state": [{"cpe": "cpe:/a:redhat:connectivity_link:1", "fix_state": "Fix deferred", "package_name": "rhcl-1/wasm-shim-rhel9", "product_name": "Red Hat Connectivity Link 1"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "tree-sitter", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "virt-firmware-rs", "product_name": "Red Hat Enterprise Linux 10"}], "public_date": "2026-10-22T19:13:55Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-115390\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-115390\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-m63x-6p34-q65x\nhttps://www.vulncheck.com/advisories/wasmtime-47.0.0-before-48.0.3-and-49.0.0-before-49.0.1-fuel-accounting-bypass-dos"], "threat_severity": "Moderate"}

{"created": "2026-10-23T03:30:15.961803+00:00", "updated": "2026-10-23T03:30:15.961818+00:00", "vendors": []}