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    CVE-2026-42270

    countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.44, star-rating/images/ and dashboards/images/screenshots/ are among public image and screenshot routes using the local fs storage backend that call getStream and pipe filesystem streams to HTTP responses without an error listener. An unauthenticated request containing a URL-encoded dot can make createReadStream open a directory, emit an asynchronous EISDIR error, and terminate the Node.js process as an unhandled exception, allowing repeated requests to keep the analytics API unavailable. The affected routes also include /appimages/*, /memberimages/*, and */screenshots/*. This issue is fixed in versions 24.05.50 and 25.03.44.

    Published:Oct 16, 2026
    Last Modified:Oct 21, 2026
    EPS:Oct 16, 2026
    EPSS Score:0.00542
    CVSS Score:7.5

    Affected Products

    Vendor
    Count
    Product
    Countly Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-248 Uncaught Exception

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-44977 (CVSS 9) — countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.4…
    CVE-2026-41582 (CVSS 7.5) — countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.4…
    CVE-2026-42269 (CVSS 8.1) — countly-server is the server-side part of Countly, a product analytics solution. Prior to 24.05.50 and 25.03.4…
    CVE-2026-87803 (CVSS 7.1) — An authorization bypass vulnerability exists in the Countly Server DBViewer due to flawed sub-pipeline detecti…
    CVE-2021-32852 (CVSS 5.4) — Countly, a product analytics solution, is vulnerable to cross-site scripting prior to version 21.11 of the com…
    CVE-2022-29174 (CVSS 8.1) — countly-server is the server-side part of Countly, a product analytics solution. Prior to versions 22.03.7 and…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High