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CVE-2026-42269

Status: Awaiting AnalysisHigh (8.1)—
Severity8.1High · CVSS 3.1
Exploitation probability0.47 %higher than 39% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, the authenticated data-migration deletion route in plugins/data_migration/api/api.js passes the user-controlled exportid to clean_up_data without path validation. plugins/data_migration/api/data_migration_helper.js concatenates that identifier into a path resolved outside the intended import directory and calls remove recursively, allowing an application administrator or user with migration permission to delete writable files or directory trees and cause data loss or service disruption. This issue is fixed in versions 24.05.50 and 25.03.44.

CVSS

Base score
8.1
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.47 %
Percentile among all scored CVEs
39
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vector AV:N/PR:L/UI:N dicta T1210. El texto describe borrado recursivo de rutas fuera del directorio, con pérdida de datos. T1005 no lo sustenta: no hay lectura de datos.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

User Account ManagementNetwork SegmentationVulnerability ScanningThreat Intelligence ProgramRestrict File and Directory PermissionsRestrict Registry Permissions

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Countly — Countly-serverAI

CWEs

References

Show 6 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-42269",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-42269",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-16T16:32:12.813140Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "Countly",
          "product": "countly-server",
          "versions": [
            {
              "status": "affected",
              "version": "< 24.05.50"
            },
            {
              "status": "affected",
              "version": ">= 25.03, < 25.03.44"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-16T16:17:23.783",
  "references": [
    {
      "url": "https://github.com/Countly/countly-server/blob/master/CHANGELOG.md#version-250344",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/Countly/countly-server/commit/764e2a1d86f9af600113f77422d520338c214229",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/Countly/countly-server/commit/b652ee8dafa91602705004d0edb602a91a0d845e",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/Countly/countly-server/releases/tag/24.05.50",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/Countly/countly-server/releases/tag/25.03.44",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/Countly/countly-server/security/advisories/GHSA-5pmc-54j6-jcgq",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, the authenticated data-migration deletion route in plugins/data_migration/api/api.js passes the user-controlled exportid to clean_up_data without path validation. plugins/data_migration/api/data_migration_helper.js concatenates that identifier into a path resolved outside the intended import directory and calls remove recursively, allowing an application administrator or user with migration permission to delete writable files or directory trees and cause data loss or service disruption. This issue is fixed in versions 24.05.50 and 25.03.44."
    }
  ],
  "lastModified": "2026-10-16T20:02:37.630",
  "sourceIdentifier": "security-advisories@github.com"
}