CVE-2026-67589
High
Description
A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to 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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apache Qpid
PublishedAug 5, 2026
First seenAug 5, 2026
Weakness typeCWE-789CWE-789
How to fix
Update
- apache qpid_protonj21.2.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache qpid_protonj2 | v < 1.2.0 | 1.2.0 |
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