TI-2026-47093 Aliases CVE-2026-66276 GHSA-jx9q-477g-4wgw

Apache Qpid Proton-J: Unbounded disposition range handling can lead to denial of service

LOW 30CWE-606Published 2026-08-05 · Updated 2026-08-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Deferred Red Hat: fix deferred

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00653 51st percentileScored 2026-11-07

Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Apache	Apache Qpid Proton-J	up to 0.34.1	—	No fix listed	CNA

Apache Qpid Proton-J VendorApache Affected up to 0.34.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:apache:qpid_proton-j::::::::	before 0.35.0	Vulnerable	Apache

cpe:2.3:a:apache:qpid_proton-j:*:*:*:*:*:*:*:* Versions before 0.35.0 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat AMQ Broker 7	Affected	No fix yet: Fix deferred
Red Hat Fuse 7	Affected	No fix yet: Fix deferred
Red Hat JBoss Enterprise Application Platform 8	Affected	No fix yet: Fix deferred
Red Hat JBoss Enterprise Application Platform Expansion Pack	Affected	No fix yet: Fix deferred
Red Hat build of Apache Camel 4 for Quarkus 3	Affected	No fix yet: Fix deferred
Red Hat build of Apache Camel for Spring Boot 4	Affected	No fix yet: Fix deferred
Red Hat build of Quarkus	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2026-66276
2026-10-03 Alias added: GHSA-jx9q-477g-4wgw
2026-10-14 EPSS moved to the 50th–90th percentile

References

Advisory 2

TI-2026-47091 Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow CVSS 3.1HIGH 7.5
TI-2026-47090 Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication CVSS 3.1HIGH 7.5
TI-2026-47085 Apache Qpid Proton-J: Unbounded symbol value caching can lead to pre-authentication resource exhaustion CVSS 3.1HIGH 7.5
TI-2018-12286 Improper certificate validation in Apache Qpid Proton-J CVSS 3.0HIGH 7.4
TI-2026-47094 Apache Qpid Proton-J: Unable to govern the maximum number of transfer frames per incoming delivery CVSS 3.1MEDIUM 6.5
TI-2026-47092 Apache Qpid Proton-J: Incoming session flow control window can be exceeded CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences