CVE-2026-115392 (GCVE-0-2026-115392)
Vulnerability from cvelistv5
Published
2026-10-22 19:13
Modified
2026-10-22 19:13
Severity ?
8.8 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
7.9 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
Summary
Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 allows a filesystem sandbox escape in wasmtime-wasi because its cap-std dependency mishandles symlinks with trailing slashes on macOS and Linux kernels lacking openat2. A guest with write access to any sandboxed directory can read and write any host-accessible file, and read-only guests may read host files via preexisting symlinks.
References
Impacted products
Vendor Product Version
bytecodealliance wasmtime Version: 0   ≤
Version: 25.0.0   ≤
Version: 37.0.0   ≤
Version: 47.0.0   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:cargo/wasmtime",
          "product": "wasmtime",
          "vendor": "bytecodealliance",
          "versions": [
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              "status": "affected",
              "version": "0",
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              "version": "24.0.13",
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            },
            {
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              "status": "affected",
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              "versionType": "semver"
            },
            {
              "status": "unaffected",
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            {
              "lessThan": "47.0.4",
              "status": "affected",
              "version": "47.0.0",
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            },
            {
              "status": "unaffected",
              "version": "47.0.4",
              "versionType": "semver"
            }
          ]
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      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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      "datePublic": "2026-08-20T00:00:00.000Z",
      "descriptions": [
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        }
      ],
      "metrics": [
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            "attackRequirements": "PRESENT",
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            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
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            "vulnIntegrityImpact": "HIGH"
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L",
            "version": "3.1"
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-61",
              "description": "UNIX Symbolic Link (Symlink) Following",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-22T19:13:58.512Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-vqjp-4c8c-hfgg)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-vqjp-4c8c-hfgg"
        },
        {
          "name": "VulnCheck Advisory: Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 Sandbox Escape via Trailing Slashes",
          "tags": [
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          "url": "https://www.vulncheck.com/advisories/wasmtime-before-24.0.13-25.0.0-before-36.0.14-37.0.0-before-46.0.3-and-47.0.0-before-47.0.4-sandbox-escape-via-trailing-slashes"
        }
      ],
      "title": "Wasmtime before 24.0.13, 25.0.0 before 36.0.14, 37.0.0 before 46.0.3, and 47.0.0 before 47.0.4 Sandbox Escape via Trailing Slashes",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-115392",
    "datePublished": "2026-10-22T19:13:58.512Z",
    "dateReserved": "2026-10-22T11:27:18.001Z",
    "dateUpdated": "2026-10-22T19:13:58.512Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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