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Vulnerability record · CVE-2026-67592 · published 5 August 2026

CVE-2026-67592: Apache qpid protonj2 allocation without limits vulnerability

Apache · Qpid Protonj2

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

7.5 CVSS 3.1 High EPSS 0.74% · top 47.2% CWE-770 · Allocation without limits
7.5CVSS 3.1 base score
0.74%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
7 Aug 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread/b4pv9hfdk7ox78pss77sb4nzwjrvqhhz Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/08/04/31 Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2026-67590Apache qpid protonj2 vulnerabilityA pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to denial of service. This issue affects …EPSS 0.77%7.5CVE-2026-67588Apache qpid protonj2 allocation without limits vulnerabilityA pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service. This issue aff…EPSS 0.77%7.5CVE-2026-67589Apache qpid protonj2 vulnerabilityA pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. This issu…EPSS 0.77%6.5CVE-2026-67591Apache qpid protonj2 allocation without limits vulnerabilityAn authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. This issue affects Apache Q…EPSS 0.65%8.6CVE-2020-3569Cisco IOS XR DVMRP IGMP packet handling memory exhaustionCisco IOS XR Software mishandles IGMP packets in its Distance Vector Multicast Routing Protocol (DVMRP) feature, allowing crafted traffic to crash th…KEVEPSS 3.3%analysed8.6CVE-2020-3566Cisco IOS XR DVMRP IGMP queue flaw causes memory exhaustionCisco IOS XR Software mishandles queue management for IGMP packets in its DVMRP feature, allowing uncontrolled memory consumption. An unauthenticated…KEVEPSS 3.7%analysed

Source: NIST National Vulnerability Database (record CVE-2026-67592), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.