What is CVE-2026-67590?

CVE-2026-67590 is a high-severity vulnerability in Apache Qpid Protonj2, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-08-05.

How severe is CVE-2026-67590?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Qpid Protonj2

CVE-2026-67590

A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to 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.

EPSS: 0.005 (41.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Qpid_protonj2
Apache Software Foundation Qpid Protonj2 — versions 0

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-67590?: CVE-2026-67590 is a high-severity vulnerability in Apache Qpid Protonj2, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-08-05.
How severe is CVE-2026-67590?: High severity. CVSS v3 base score is 7.5 out of 10.