Read the docs
TI-2026-47753 Aliases CVE-2026-67592GHSA-4gqp-3m3h-rrx3

Apache Qpid ProtonJ2: Unable to govern the maximum number of transfer frames per incoming delivery

Priority MEDIUM 40CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
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. Impact type from CWE-770.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0074 54th percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Qpid ProtonJ2up to 1.1.0—No fix listedCNA
  • Apache Qpid ProtonJ2 VendorApache Affected up to 1.1.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:qpid_protonj2:*:*:*:*:*:*:*:*before 1.2.0VulnerableApache
  • cpe:2.3:a:apache:qpid_protonj2:*:*:*:*:*:*:*:* Versions before 1.2.0 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 →

ProductStatusPlan or fix
Red Hat AMQ ClientsAffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-67592
  2. 2026-10-03 Alias added: GHSA-4gqp-3m3h-rrx3

References

Advisory 2

  • TI-2026-47751 Apache Qpid ProtonJ2: Unbounded type nesting can lead to pre-authentication stackoverflow CVSS 3.1HIGH 7.5
  • TI-2026-47750 Apache Qpid ProtonJ2: Type size/count handling can lead to excessive allocation pre-authentication CVSS 3.1HIGH 7.5
  • TI-2026-47749 Apache Qpid ProtonJ2: Unbounded symbol value caching can lead to pre-authentication resource exhaustion CVSS 3.1HIGH 7.5
  • TI-2026-47752 Apache Qpid ProtonJ2: 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