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    CVE-2026-47848

    In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

    Published:Aug 26, 2026
    Last Modified:Sep 4, 2026
    EPS:Aug 26, 2026
    EPSS Score:0.00152
    CVSS Score:6.1

    Affected Products

    Vendor
    Broadcom
    Product
    Reactor Netty
    Vendor
    Spring
    Product
    Reactor Netty

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-178 Cross-Site Flashing

    Related CVEs

    CVE-2026-47845 (CVSS 5.3) — In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy P…
    CVE-2026-47844 (CVSS 5.3) — In specific scenarios, the Reactor Netty HTTP Server may leak exception details across unrelated requests. In …
    CVE-2026-47843 (CVSS 3.7) — In specific scenarios involving multiple clients with different DNS resolver configurations, Reactor Netty may…
    CVE-2023-34054 (CVSS 5.3) — In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possib…
    CVE-2023-34062 (CVSS 7.5) — In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, a malicious u…
    CVE-2022-31684 (CVSS 4.3) — Reactor Netty HTTP Server, in versions 1.0.11 - 1.0.23, may log request headers in some cases of invalid HTTP …
    CVE-2020-5403 (CVSS 7.5) — Reactor Netty HttpServer, versions 0.9.3 and 0.9.4, is exposed to a URISyntaxException that causes the connect…
    CVE-2020-5404 (CVSS 5.9) — The HttpClient from Reactor Netty, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be u…
    CVE-2019-11284 (CVSS 8.6) — Pivotal Reactor Netty, versions prior to 0.8.11, passes headers through redirects, including authorization one…

    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