CVE-2026-66274
Received Received - Intake

Stack Overflow in Apache Qpid Proton-J

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Apache Software Foundation

Description
A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially 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 Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-66274
EUVD
EUVD-2026-53082

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
apache qpid_proton-j to 0.35.0 (exc)
apache qpid_proton-j 0.35.0
apache qpid_proton-j to 0.34.1 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability allows an attacker to send specially crafted data that causes a stack overflow error before authentication is required. This could crash the affected software, leading to a denial of service where the system becomes unavailable.

Detection Guidance

Detecting this vulnerability requires checking the version of Apache Qpid Proton-J in use. If your system runs version 0.34.1 or earlier, it is vulnerable. Commands to check the version include examining dependency files like pom.xml for Maven projects or running specific queries in your package manager.

Impact Analysis

If you use Apache Qpid Proton-J versions up to 0.34.1, an attacker could exploit this to crash your system, making services unavailable. This could disrupt applications relying on the software for messaging or data processing.

Compliance Impact

This vulnerability (CVE-2026-66274) causes a denial of service via StackOverflowError but does not directly impact data confidentiality or integrity. Compliance with GDPR or HIPAA would depend on system context rather than this specific issue.

Mitigation Strategies

Upgrade Apache Qpid Proton-J to version 0.35.0 or later to fix the StackOverflowError vulnerability.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-66274. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart