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    2 vulnerabilities found for httpcore2 by pydantic

    CVE-2026-84381 (GCVE-0-2026-84381)

    Vulnerability from nvd – Published: 2026-09-02 18:01 – Updated: 2026-09-05 01:03
    VLAI
    Title
    HTTPX2: Secure WebSocket traffic sent without TLS through SOCKS proxies
    Summary
    HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/_sync/socks_proxy.py and src/httpcore2/httpcore2/_async/socks_proxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes https. HTTPX2 exposes the flaw through Client.websocket() and AsyncClient.websocket() from 2.6.0 through 2.9.1, so the opening handshake, query parameters, Authorization headers, cookies, and subsequent frames can cross the proxy path in plaintext without certificate verification. An attacker controlling or observing that path can read or modify traffic and impersonate the WebSocket server. This issue is fixed in httpcore2 2.10.0 and HTTPX2 2.10.0.
    Severity
    8.1 (High)
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-05 01:03 UTC
    CWE
    • CWE-319 - Cleartext Transmission of Sensitive Information
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-84381 (GCVE-0-2026-84381)

    Vulnerability from cvelistv5 – Published: 2026-09-02 18:01 – Updated: 2026-09-05 01:03
    VLAI
    Title
    HTTPX2: Secure WebSocket traffic sent without TLS through SOCKS proxies
    Summary
    HTTPX2 is a next generation HTTP client for Python. Prior to 2.10.0, httpcore2 fails to start TLS in src/httpcore2/httpcore2/_sync/socks_proxy.py and src/httpcore2/httpcore2/_async/socks_proxy.py when the remote origin uses wss through a SOCKS5 proxy because the TLS upgrade condition only recognizes https. HTTPX2 exposes the flaw through Client.websocket() and AsyncClient.websocket() from 2.6.0 through 2.9.1, so the opening handshake, query parameters, Authorization headers, cookies, and subsequent frames can cross the proxy path in plaintext without certificate verification. An attacker controlling or observing that path can read or modify traffic and impersonate the WebSocket server. This issue is fixed in httpcore2 2.10.0 and HTTPX2 2.10.0.
    Severity
    8.1 (High)
    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-05 01:03 UTC
    CWE
    • CWE-319 - Cleartext Transmission of Sensitive Information
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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