{"id":"CVE-2026-67591","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-67591","generatedAt":"2026-10-28T05:02:31.510Z","title":"An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service.","description":"An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service.\n\nThis issue affects Apache Qpid ProtonJ2: through 1.1.0.\n\nUsers are recommended to upgrade to version 1.2.0, which fixes the issue.","published":"2026-08-05T07:16:39.000Z","lastModified":"2026-10-24T16:10:00.000Z","status":"Analyzed","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-770"],"affected":["apache/qpid protonj2"],"epss":{"score":0.00653,"percentile":0.51063,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.65%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://lists.apache.org/thread/rwmggh2bkm6qotxpdfcplht3jgw5n036","tags":["Mailing List","Vendor Advisory"],"source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/08/04/30","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-67591","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}