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CVE-2026-42269— countly-server: Path Traversal in delete_import Endpoint Allows Arbitrary File and Directory Deletion

Quick assessment

Affected
Countly countly-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Countly-server 是产品分析解决方案 Countly 的服务器端组件。在 24.05.50 和 25.03.44 版本之前，插件 中的已认证数据迁移删除接口，会将用户可控的 参数直接传递给 函数，且未进行路径验证。随后， 会将该标识符拼接至文件路径中，导致解析出的路径可能位于预期导入目录之外，并递归调用 函数。这使得拥有迁移权限的应用管理员或用户能够删除可写文件或目录树，从而引发数据丢失或服务中断。该问题已在 24.05.50 和 25.03.44 版本中修复。

CVSS 8.1 · High

Possible ATT&CK Techniques 1 AI

T1565.002 · Transmitted Data Manipulation

Affected Version Matrix 2

VendorProduct Version RangeStatus
Countly countly-server < 24.05.50 affected
>= 25.03, < 25.03.44 affected
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I. Basic Information for CVE-2026-42269

Vulnerability Information
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Vulnerability Title
countly-server: Path Traversal in delete_import Endpoint Allows Arbitrary File and Directory Deletion
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Countly countly-server < 24.05.50 -

II. Public POCs for CVE-2026-42269

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III. Intelligence Information for CVE-2026-42269

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Patches & Fixes for CVE-2026-42269 (2)

Vendor Advisories for CVE-2026-42269 (1)

Vendor Pages for CVE-2026-42269 (2)

Other References for CVE-2026-42269 (1)

Same Patch Batch · Countly · 2026-10-16 · 4 CVEs total

CVE-2026-44977 9.0 CRITICAL countly-server: Stored XSS in feedback upload enables app-admin to compromise global admin
CVE-2026-42270 7.5 HIGH countly-server: Unauthenticated Denial of Service (DoS) via Unhandled Stream Exception
CVE-2026-41582 7.5 HIGH countly-server: Unauthenticated Path Traversal via Public Image and Screenshot Routes Lead

IV. Related Vulnerabilities

Same product: countly-server
Same vendor: Countly
Same weakness: CWE-22

V. Comments for CVE-2026-42269

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