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CVE-2026-67589— Apache Qpid ProtonJ2: Type size/count handling can lead to excessive allocation pre-authentication

Quick assessment

Affected
Apache Software Foundation Apache Qpid ProtonJ2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Qpid ProtonJ2是美国Apache基金会的一个消息队列中间件。 Apache Qpid ProtonJ2 1.1.0及之前版本存在资源管理错误漏洞，该漏洞源于类型大小/计数处理不当，导致过度分配，可能导致拒绝服务。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.77% · P54

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Qpid ProtonJ2 ≤ 1.1.0 affected
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I. Basic Information for CVE-2026-67589

Vulnerability Information
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Vulnerability Title
Apache Qpid ProtonJ2: Type size/count handling can lead to excessive allocation pre-authentication
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Qpid ProtonJ2 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Qpid ProtonJ2是美国Apache基金会的一个消息队列中间件。 Apache Qpid ProtonJ2 1.1.0及之前版本存在资源管理错误漏洞，该漏洞源于类型大小/计数处理不当，导致过度分配，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Qpid ProtonJ2 0 ~ 1.1.0 -

II. Public POCs for CVE-2026-67589

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III. Intelligence Information for CVE-2026-67589

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Mailing List Discussions for CVE-2026-67589 (1)

Same Patch Batch · Apache Software Foundation · 2026-08-05 · 33 CVEs total

CVE-2026-68077 Apache Qpid Broker-J: Unbounded disposition range handling can lead to denial of service
CVE-2026-60053 Apache Answer: Residual Administrative API Key Access After Role or Account Revocation
CVE-2026-60023 Apache Answer: Unauthorized disclosure of deleted or pending answer content
CVE-2026-50749 Apache Answer: Missing authorization in revision audit reject allows authenticated users t
CVE-2026-48912 Apache Answer: Improper authorization in avatar update cleanup allows authenticated users
CVE-2026-48911 Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Conf
CVE-2026-48834 Apache Answer: Denial of service via crafted Accept-Language header parsing
CVE-2026-61486 Apache Lucy: stack-buffer-overflow in JSON parser error reporter on malformed input
CVE-2026-61484 Apache Lucy: LucyX::Remote::SearchServer unauthenticated remote Storable::thaw -> RCE/DoS
CVE-2026-61483 Apache Lucy: QueryParser unbounded recursion on deeply-nested query -> C-stack-overflow Do
CVE-2026-68080 Apache Qpid Broker-J: Unbounded echo flow responses can lead to denial of service
CVE-2026-67592 Apache Qpid ProtonJ2: Unable to govern the maximum number of transfer frames per incoming
CVE-2026-67555 Apache Qpid Proton Dotnet: Unable to govern the maximum number of transfer frames per inco
CVE-2026-68078 Apache Qpid Broker-J: Unable to govern the maximum number of transfer frames per incoming
CVE-2026-66277 Apache Qpid Proton-J: Unable to govern the maximum number of transfer frames per incoming
CVE-2026-67554 Apache Qpid Proton Dotnet: Unbounded disposition range handling can lead to denial of serv
CVE-2026-66257 Apache Qpid Proton-J: Unbounded symbol value caching can lead to pre-authentication resour
CVE-2026-66276 Apache Qpid Proton-J: Unbounded disposition range handling can lead to denial of service
CVE-2026-67591 Apache Qpid ProtonJ2: Incoming session flow control window can be exceeded
CVE-2026-67553 Apache Qpid Proton Dotnet: Incoming session flow control window can be exceeded

Showing top 20 of 33 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Apache Qpid ProtonJ2
Same vendor: Apache Software Foundation
Same weakness: CWE-789

V. Comments for CVE-2026-67589

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