VulnerabilityAnalyzed
CVE-2026-66275
An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service.
MEDIUM 6.5EPSS 0.42%
Does this matter?
Lower severity and a low EPSS score (0.42%). Track it; it rarely justifies an emergency change on its own.
Description
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
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.42% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- apache/qpid proton-j
- Source
- security@apache.org
References
- https://lists.apache.org/thread/jds59nxrgcxtlx7xl0kvl5hqt07thxztVendor Advisory
- http://www.openwall.com/lists/oss-security/2026/08/04/11Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.