CVE-2026-66257

A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion leading to denial of service. This issue affects Apache Qpid Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, 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/dnczt6bgfcq2x6q8ljco177h1qmv59fm	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/08/04/8	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:apache:qpid_proton-j:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-05 06:16

Updated : 2026-08-07 12:38

NVD link : CVE-2026-66257

Mitre link : CVE-2026-66257

CVE.ORG link : CVE-2026-66257

JSON object : View

Products Affected

apache

qpid_proton-j

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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