CVE-2026-67588

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/vk4j02dzggfdrdkwvzmqo4jro2tgj0jt	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/08/04/27	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:qpid_protonj2:*:*:*:*:*:*:*:*

History

07 Aug 2026, 20:40

Type	Values Removed	Values Added
First Time		Apache qpid Protonj2 Apache
References	~~() https://lists.apache.org/thread/vk4j02dzggfdrdkwvzmqo4jro2tgj0jt -~~	() https://lists.apache.org/thread/vk4j02dzggfdrdkwvzmqo4jro2tgj0jt - Mailing List, Vendor Advisory
References	~~() http://www.openwall.com/lists/oss-security/2026/08/04/27 -~~	() http://www.openwall.com/lists/oss-security/2026/08/04/27 - Mailing List, Third Party Advisory
CPE		cpe:2.3:a:apache:qpid_protonj2::::::::

06 Aug 2026, 14:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

05 Aug 2026, 08:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/08/04/27 -

05 Aug 2026, 06:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-08-05 06:16

Updated : 2026-08-07 20:40

NVD link : CVE-2026-67588

Mitre link : CVE-2026-67588

CVE.ORG link : CVE-2026-67588

JSON object : View

Products Affected

apache

qpid_protonj2

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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