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qpid-proton vulnerabilities

Vulnerabilities published for qpid-proton in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerabilities: 7

  1. CVE-2026-67592

    High · CVSS 7.5EPSS 0.74%No fix published

    Apache Qpid ProtonJ2: Unable to govern the maximum number of transfer frames per incoming delivery

    It was not possible to govern the maximum number of transfer frames per incoming delivery, enabling an authenticated attacker to cause excessive resource usage and potential denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue

    Published Updated
  2. CVE-2026-67591

    Medium · CVSS 6.5EPSS 0.65%No fix published

    Apache Qpid ProtonJ2: Incoming session flow control window can be exceeded

    An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.

    Published Updated
  3. CVE-2026-67590

    High · CVSS 7.5EPSS 0.77%No fix published

    Apache Qpid ProtonJ2: Unbounded type nesting can lead to pre-authentication stackoverflow

    A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.

    Published Updated
  4. CVE-2026-67589

    High · CVSS 7.5EPSS 0.77%No fix published

    Apache Qpid ProtonJ2: Type size/count handling can lead to excessive allocation pre-authentication

    A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.

    Published Updated
  5. CVE-2026-67588

    High · CVSS 7.5EPSS 0.77%No fix published

    Apache Qpid ProtonJ2: Unbounded symbol value caching can lead to pre-authentication resource exhaustion

    A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue.

    Published Updated
  6. CVE-2019-0223

    High · CVSS 7.4EPSS 6.23%No fix published

    CVE-2019-0223

    While investigating bug PROTON-2014, we discovered that under some circumstances Apache Qpid Proton versions 0.9 to 0.27.0 (C library and its language bindings) can connect to a peer anonymously using TLS *even when configured to verify the peer certificate* while used with OpenSSL versions before 1.1.0. This means that an undetected man in the middle attack could be constructed if an attacker can arrange to intercept TLS traffic.

    Published Updated
  7. CVE-2018-17187

    High · CVSS 7.4EPSS 2.54%No fix published

    CVE-2018-17187

    The Apache Qpid Proton-J transport includes an optional wrapper layer to perform TLS, enabled by use of the 'transport.ssl(...)' methods. Unless a verification mode was explicitly configured, client and server modes previously defaulted as documented to not verifying a peer certificate, with options to configure this explicitly or select a certificate verification mode with or without hostname verification being performed. The latter hostname verifying mode was not implemented in Apache Qpid Proton-J versions 0.3 to 0.29.0, with attempts to use it resulting in an exception. This left only the option to verify the certificate is trusted, leavi

    Published Updated

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