FKIE_CVE-2026-63133

Vulnerability from fkie_nvd - Published: 2026-08-11 21:17 - Updated: 2026-08-12 14:18
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` extracts uploaded archives with no limit on entry count, directory depth, total entries, or output size. A small malicious archive containing a large number of directory or file entries causes the filebeat processing container to create an unbounded number of filesystem objects, exhausting inodes or filesystem metadata and denying service to the processing pipeline and any service sharing the same mount. Version 26.07.0 fixes the issue.
References
security-advisories@github.comhttps://github.com/cisagov/Malcolm/releases/tag/v26.07.0
security-advisories@github.comhttps://github.com/cisagov/Malcolm/security/advisories/GHSA-c35g-mgc3-95rx
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/cisagov/Malcolm/security/advisories/GHSA-c35g-mgc3-95rx
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Malcolm",
          "vendor": "cisagov",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 26.07.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Malcolm is a network traffic analysis tool suite. Prior to version 26.07.0, `safe-extract.py` extracts uploaded archives with no limit on entry count, directory depth, total entries, or output size. A small malicious archive containing a large number of directory or file entries causes the filebeat processing container to create an unbounded number of filesystem objects, exhausting inodes or filesystem metadata and denying service to the processing pipeline and any service sharing the same mount. Version 26.07.0 fixes the issue."
    }
  ],
  "id": "CVE-2026-63133",
  "lastModified": "2026-08-12T14:18:26.167",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63133",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-12T13:01:08.328295Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-11T21:17:44.167",
  "references": [
    {
      "source": "security-advisories@github.com",
      "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-c35g-mgc3-95rx"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/cisagov/Malcolm/security/advisories/GHSA-c35g-mgc3-95rx"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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Nomenclature

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