CVE-2026-63134 (GCVE-0-2026-63134)

Vulnerability from cvelistv5 – Published: 2026-08-11 20:29 – Updated: 2026-08-11 20:29
VLAI
Title
Malcolm's Path Traversal in Archive Extraction Allows Arbitrary Directory Creation
Summary
Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` protects file extraction with libarchive's secure flags, but creates directory entries with a raw `os.makedirs(os.path.join(dest, entry.pathname))` that has no traversal protection. An uploaded malicious archive containing a directory entry with a `../` sequence or an absolute path causes the filebeat processing container to create directories outside the intended extraction directory. Version 26.07.0 fixes the issue.
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
Impacted products
Vendor Product Version
cisagov Malcolm Affected: < 26.07.0
Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Malcolm",
          "vendor": "cisagov",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.07.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` protects file extraction with libarchive\u0027s secure flags, but creates directory entries with a raw `os.makedirs(os.path.join(dest, entry.pathname))` that has no traversal protection. An uploaded malicious archive containing a directory entry with a `../` sequence or an absolute path causes the filebeat processing container to create directories outside the intended extraction directory. Version 26.07.0 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T20:29:38.642Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4"
        },
        {
          "name": "https://github.com/cisagov/Malcolm/releases/tag/v26.07.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cisagov/Malcolm/releases/tag/v26.07.0"
        }
      ],
      "source": {
        "advisory": "GHSA-65mm-vgrw-vqx4",
        "discovery": "UNKNOWN"
      },
      "title": "Malcolm\u0027s Path Traversal in Archive Extraction Allows Arbitrary Directory Creation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-63134",
    "datePublished": "2026-08-11T20:29:38.642Z",
    "dateReserved": "2026-07-15T16:54:55.817Z",
    "dateUpdated": "2026-08-11T20:29:38.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-63134",
      "date": "2026-08-12",
      "epss": "0.00249",
      "percentile": "0.16307"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-63134\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2026-08-11T21:17:44.307\",\"lastModified\":\"2026-08-11T21:17:44.307\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` protects file extraction with libarchive\u0027s secure flags, but creates directory entries with a raw `os.makedirs(os.path.join(dest, entry.pathname))` that has no traversal protection. An uploaded malicious archive containing a directory entry with a `../` sequence or an absolute path causes the filebeat processing container to create directories outside the intended extraction directory. Version 26.07.0 fixes the issue.\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"cisagov\",\"product\":\"Malcolm\",\"versions\":[{\"version\":\"\u003c 26.07.0\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-22\"}]}],\"references\":[{\"url\":\"https://github.com/cisagov/Malcolm/releases/tag/v26.07.0\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/cisagov/Malcolm/security/advisories/GHSA-65mm-vgrw-vqx4\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}



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