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Verified Advisories

Concise advisories for CRITICAL/HIGH vulnerabilities – affected and fixed versions confirmed against the vendor's own advisory before publishing. 9 total.

Severity: All Critical High
Library: Java
CVE-2026-67552 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Pre-authentication stack overflow in Apache Qpid Proton Dotnet (CVE-2026-67552)

A pre-authentication attacker can exploit unbounded type nesting in Apache Qpid Proton Dotnet to trigger a StackOverflowError, potentially causing denial of service. No authentication is required to trigger this condi...

Fixed in 1.1.0

Denial Of Service Apache Red Hat Qpid Proton Dotnet
CVE-2026-67589 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Pre-authentication denial of service in Apache Qpid ProtonJ2 (CVE-2026-67589)

A pre-authentication attacker can exploit improper type size/count handling in Apache Qpid ProtonJ2 to trigger excessive memory allocation, leading to potential denial of service. No authentication is required to expl...

Fixed in 1.2.0

Denial Of Service Apache Red Hat Qpid Protonj2
CVE-2026-67588 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Pre-authentication denial of service in Apache Qpid ProtonJ2 (CVE-2026-67588)

Apache Qpid ProtonJ2 contains a vulnerability in its symbol value caching mechanism that imposes no upper bound on cache growth. A pre-authentication attacker can exploit this to exhaust server resources, resulting in...

Fixed in 1.2.0

Denial Of Service Apache Red Hat Qpid Protonj2
CVE-2026-67590 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Pre-authentication stack overflow in Apache Qpid ProtonJ2 (CVE-2026-67590)

A pre-authentication attacker can exploit unbounded type nesting in Apache Qpid ProtonJ2 to trigger a StackOverflowError, potentially causing denial of service. Because the vulnerability is reachable before authentica...

Fixed in 1.2.0

Denial Of Service Apache Red Hat Qpid Protonj2
CVE-2026-67592 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Uncontrolled resource consumption in Apache Qpid ProtonJ2 (CVE-2026-67592)

Apache Qpid ProtonJ2 did not enforce a maximum number of transfer frames per incoming delivery. An authenticated attacker could exploit this to cause excessive resource usage and potential denial of service.

Fixed in 1.2.0

Denial Of Service Apache Red Hat Qpid Protonj2
CVE-2026-66273 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Pre-authentication denial of service in Apache Qpid Proton-J (CVE-2026-66273)

Apache Qpid Proton-J contains a flaw in type size/count handling that allows a pre-authentication attacker to trigger excessive memory allocation. This can lead to a potential denial of service condition.

Fixed in 0.35.0

Denial Of Service Apache Red Hat Qpid Proton J
CVE-2026-66257 HIGH CVSS 7.5 Verified Advisory Aug 04, 2026

Pre-authentication resource exhaustion in Apache Qpid Proton-J (CVE-2026-66257)

Apache Qpid Proton-J contains a vulnerability in which symbol values are cached without bound, allowing a pre-authentication attacker to exhaust server resources. Successful exploitation results in denial of service.

Fixed in 0.35.0

Denial Of Service Apache Red Hat Qpid Proton J

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