CVE-2026-67588

A pre-authentication attacker could leverage unbounded symbol value caching to cause resource exhaustion 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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-25)

CWE

CWE-770

Published

2026-08-05

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• apache:qpid_protonj2

References

• https://lists.apache.org/thread/vk4j02dzggfdrdkwvzmqo4jro2tgj0jt
• http://www.openwall.com/lists/oss-security/2026/08/04/27

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