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vuln-cve/data/2026/44xxx/CVE-2026-44216.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-44216",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-05-05T15:13:47.572Z",
"datePublished": "2026-05-14T14:54:32.975Z",
"dateUpdated": "2026-07-28T12:04:48.026Z"
},
"containers": {
"cna": {
"title": "Wasmtime: Panic when allocating a table exceeding the size of the host's address space",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"lang": "en",
"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "LOW",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"vectorString": "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",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-p8xm-42r7-89xg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-p8xm-42r7-89xg"
}
],
"affected": [
{
"vendor": "bytecodealliance",
"product": "wasmtime",
"versions": [
{
"version": ">= 30.0.0, < 36.0.8",
"status": "affected"
},
{
"version": ">= 37.0.0, < 43.0.2",
"status": "affected"
},
{
"version": "44.0.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-05-14T14:54:32.975Z"
},
"descriptions": [
{
"lang": "en",
"value": "Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on overflow. This overflow is possible to trigger, and thus panic, when a table with an extremely large size is allocated. This is possible with the WebAssembly memory64 proposal where tables can have sizes in the 64-bit range as opposed to the previous 32-bit range which would not overflow. The panic happens when attempting to create a very large table, such as when instantiating a WebAssembly module or component. This vulnerability is fixed in 36.0.8, 43.0.2, and 44.0.1."
}
],
"source": {
"advisory": "GHSA-p8xm-42r7-89xg",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-05-15T19:08:36.553275Z",
"id": "CVE-2026-44216",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-05-15T19:09:21.141Z"
}
},
{
"affected": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:hummingbird:1"
],
"defaultStatus": "affected",
"packageName": "rust-main",
"product": "Red Hat Hardened Images",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "1.97.1-2.hum1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10"
],
"defaultStatus": "unaffected",
"packageName": "virt-firmware-rs",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat"
}
],
"datePublic": "2026-05-14T14:54:32.975Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Wasmtime, a runtime for WebAssembly. A remote attacker could exploit an arithmetic overflow vulnerability by instantiating a WebAssembly module or component that attempts to allocate an extremely large table using the WebAssembly memory64 proposal. This flaw causes Wasmtime to panic, resulting in a Denial of Service (DoS) for the affected system."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-190",
"description": "Integer Overflow or Wraparound",
"lang": "en",
"type": "CWE"
}
]
}
],
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-44216"
},
{
"name": "RHBZ#2477467",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477467"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44216.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:45341"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:45341: Red Hat Hardened Images"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-05-14T16:01:38.636Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-05-14T14:54:32.975Z",
"value": "Made public."
}
],
"title": "wasmtime: Wasmtime: Denial of Service via large WebAssembly table allocation",
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
},
"providerMetadata": {
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP",
"dateUpdated": "2026-07-28T12:04:48.026Z"
}
}
]
}
}
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