CVE Feed

    Dashboard / CVE / CVE-2026-19203

    CVE-2026-19203

    A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty and an intermediary proxy to interpret different request boundaries, potentially resulting in HTTP request smuggling. This is caused by Jetty accepting a lone LF character as a terminator in parts of chunked request parsing. Depending on the Jetty version and configured HTTP compliance mode, this may occur in chunk extensions, chunk data termination, or trailer termination.

    Published:Sep 8, 2026
    Last Modified:Sep 8, 2026
    EPS:Sep 8, 2026
    EPSS Score:
    CVSS Score:8.3

    Affected Products

    Vendor
    Eclipse
    Product
    Jetty

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-273 HTTP Response Smuggling
    CAPEC-33 HTTP Request Smuggling

    Related CVEs

    CVE-2026-12611 (CVSS 8.7) — A client may issue HTTP/2 requests to a Jetty server that result in blocking writes that are never unblocked, …
    CVE-2026-19204 (CVSS 8.7) — A client may send a WebSocket frame with an unknown opcode and a very large declared payload length, causing J…
    CVE-2026-10050 (CVSS 8.7) — In Eclipse Jetty, the Digest authentication server-side component uses ISO-8859-1 to encode the password as by…
    CVE-2024-7708 (CVSS 7.5) — For requests that have a body, but reading the body may end up in reading 0 bytes, there is a buffer leak. Thi…
    CVE-2026-8384 (CVSS 5.3) — In Eclipse Jetty, an HTTP URI of this form: /public;/../admin/secret.txt results in an unresolved…
    CVE-2026-6790 (CVSS 5.3) — In Eclipse Jetty, for HTTP/1, HTTP/2 and HTTP/3 requests, there is no strict check that the request authority …
    CVE-2026-10051 (CVSS 6.9) — In Eclipse Jetty, a first HTTP/1.1 request with trailers causes the server to retain the trailers in subsequen…
    CVE-2026-2332 (CVSS 7.4) — In Eclipse Jetty, the HTTP/1.1 parser is vulnerable to request smuggling when chunk extensions are used, simil…
    CVE-2026-5795 (CVSS 7.4) — In Eclipse Jetty, the class JASPIAuthenticator initiates the authentication checks, which set two ThreadLocal …
    CVE-2026-1605 (CVSS 7.5) — In Eclipse Jetty, versions 12.0.0-12.0.31 and 12.1.0-12.0.5, class GzipHandler exposes a vulnerability when a …

    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