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    CVE-2026-73243

    kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type. This issue is fixed in version 5.0.1.

    Published:Aug 11, 2026
    Last Modified:Aug 13, 2026
    EPS:Aug 11, 2026
    EPSS Score:0.00317
    CVSS Score:5.8

    Affected Products

    Vendor
    Keking
    Product
    Kkfileview

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

    CVE-2026-73244 (CVSS 5.3) — kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticate…
    CVE-2025-4538 (CVSS 5.3) — A vulnerability was found in kkFileView 4.4.0. It has been classified as critical. This affects an unknown par…
    CVE-2023-48815 (CVSS 6.1) — kkFileView v4.3.0 is vulnerable to Incorrect Access Control.…
    CVE-2022-46934 (CVSS 6.1) — kkFileView v4.1.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the url parameter a…
    CVE-2022-4740 (CVSS 3.5) — A vulnerability, which was classified as problematic, has been found in kkFileView. Affected by this issue is …
    CVE-2022-43140 (CVSS 7.5) — kkFileView v4.1.0 was discovered to contain a Server-Side Request Forgery (SSRF) via the component cn.keking.w…
    CVE-2022-42149 (CVSS 9.8) — kkFileView 4.0 is vulnerable to Server-side request forgery (SSRF) via controller\OnlinePreviewController.java…
    CVE-2022-42147 (CVSS 6.1) — kkFileView 4.0 is vulnerable to Cross Site Scripting (XSS) via controller\ Filecontroller.java.…
    CVE-2022-40879 (CVSS 6.1) — kkFileView v4.1.0 is vulnerable to Cross Site Scripting (XSS) via the parameter 'errorMsg.'…
    CVE-2022-36593 (CVSS 6.5) — kkFileView v4.0.0 was discovered to contain an arbitrary file deletion vulnerability via the fileName paramete…

    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