CVE-2026-66275

An authenticated attacker could exceed the session flow control incoming window 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 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 50% 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_proton-j

References

• https://lists.apache.org/thread/jds59nxrgcxtlx7xl0kvl5hqt07thxzt
• http://www.openwall.com/lists/oss-security/2026/08/04/11

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