Bug 2511326 (CVE-2026-66257) - CVE-2026-66257 qpid-proton-j: Apache Qpid Proton-J: Denial of Service via unbounded symbol value caching
Summary: CVE-2026-66257 qpid-proton-j: Apache Qpid Proton-J: Denial of Service via unb...
Keywords:
Status: NEW
Alias: CVE-2026-66257
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-05 06:01 UTC by OSIDB Bzimport
Modified: 2026-09-10 23:26 UTC (History)
52 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:63302 0 None None None 2026-09-03 18:34:21 UTC
Red Hat Product Errata RHSA-2026:66488 0 None None None 2026-09-10 16:38:20 UTC
Red Hat Product Errata RHSA-2026:66545 0 None None None 2026-09-10 23:26:22 UTC

Description OSIDB Bzimport 2026-08-05 06:01:36 UTC 
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.
Comment 3 errata-xmlrpc 2026-09-03 18:34:18 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.3.SP1

Via RHSA-2026:63302 https://access.redhat.com/errata/RHSA-2026:63302
Comment 4 errata-xmlrpc 2026-09-10 16:38:17 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.14.1

Via RHSA-2026:66488 https://access.redhat.com/errata/RHSA-2026:66488
Comment 5 errata-xmlrpc 2026-09-10 23:26:18 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.13.6

Via RHSA-2026:66545 https://access.redhat.com/errata/RHSA-2026:66545
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