CVE-2026-67588

Description

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.

References

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