CVE Feed

    Dashboard / CVE / CVE-2023-40170

    CVE-2023-40170

    jupyter-server is the backend for Jupyter web applications. Improper cross-site credential checks on `/files/` URLs could allow exposure of certain file contents, or accessing files when opening untrusted files via "Open image in new tab". This issue has been addressed in commit `87a49272728` which has been included in release `2.7.2`. Users are advised to upgrade. Users unable to upgrade may use the lower performance `--ContentsManager.files_handler_class=jupyter_server.files.handlers.FilesHandler`, which implements the correct checks.

    Published:Aug 28, 2023
    Last Modified:Feb 13, 2025
    EPS:Aug 28, 2023
    EPSS Score:0.00593
    CVSS Score:4.6

    Affected Products

    Vendor
    Jupyter
    Product
    Jupyter Server

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-12 Choosing Message Identifier
    CAPEC-166 Force the System to Reset Values
    CAPEC-19 Embedding Scripts within Scripts
    CAPEC-209 XSS Using MIME Type Mismatch
    CAPEC-216 Communication Channel Manipulation
    CAPEC-36 Using Unpublished Interfaces or Functionality
    CAPEC-441 Malicious Logic Insertion
    CAPEC-478 Modification of Windows Service Configuration
    CAPEC-479 Malicious Root Certificate
    CAPEC-502 Intent Spoof
    CAPEC-503 WebView Exposure
    CAPEC-536 Data Injected During Configuration
    CAPEC-546 Incomplete Data Deletion in a Multi-Tenant Environment
    CAPEC-550 Install New Service
    CAPEC-551 Modify Existing Service
    CAPEC-552 Install Rootkit
    CAPEC-556 Replace File Extension Handlers
    CAPEC-558 Replace Trusted Executable
    CAPEC-562 Modify Shared File
    CAPEC-563 Add Malicious File to Shared Webroot
    CAPEC-564 Run Software at Logon
    CAPEC-578 Disable Security Software
    CAPEC-588 DOM-Based XSS
    CAPEC-591 Reflected XSS
    CAPEC-592 Stored XSS
    CAPEC-62 Cross Site Request Forgery
    CAPEC-63 Cross-Site Scripting (XSS)
    CAPEC-85 AJAX Footprinting

    Related CVEs

    CVE-2026-6658 (CVSS 5.4) — A vulnerability in jupyter/nbconvert versions <= 7.17.0 allows for Cross-site Scripting (XSS) via unsanitized …
    CVE-2026-44727 (CVSS 9.3) — Jupyter Server is the backend for Jupyter web applications. Prior to 2.20, the nbconvert HTTP handlers in jupy…
    CVE-2026-6657 (CVSS 8.8) — A vulnerability in jupyter-server versions 1.12.0 through 2.17.0 allows an attacker to bypass CORS origin vali…
    CVE-2026-5422 (CVSS 8.1) — A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boun…
    CVE-2026-40934 (CVSS 7.6) — Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the secret used to…
    CVE-2026-40110 (CVSS 7.6) — Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the Origin header …
    CVE-2026-35397 (CVSS 7.6) — Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, a path traversal v…
    CVE-2025-61669 (CVSS 6.3) — Jupyter Server is the backend for Jupyter web applications. In jupyter_server versions through 2.17.0, the nex…
    CVE-2024-35178 (CVSS 7.5) — The Jupyter Server provides the backend for Jupyter web applications. Jupyter Server on Windows has a vulnerab…
    CVE-2023-49080 (CVSS 3.5) — The Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web app…

    References

    https://github.com/jupyter-server/jupyter_server/commit/87a4927272819f0b1cae1afa4c8c86ee2da002fd
    https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-64x5-55rw-9974
    https://lists.fedoraproject.org/archives/list/[email protected]/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF/
    https://github.com/jupyter-server/jupyter_server/commit/87a4927272819f0b1cae1afa4c8c86ee2da002fd
    https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-64x5-55rw-9974
    https://lists.fedoraproject.org/archives/list/[email protected]/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ/
    https://lists.fedoraproject.org/archives/list/[email protected]/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF/

    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