{"id":"CVE-2026-118487","title":"Heap exhaustion via unbounded line accumulation in Vert.x STOMP FrameParser","summary":"In Eclipse Vert.x versions [4.0.0, 4.5.35] or [5.0.0, 5.2.2], the `FrameParser` in vertx-stomp creates a `RecordParser` without setting `maxRecordSize`, so any peer that streams bytes continuously without a newline character causes the p…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-770"],"vendor":"Eclipse Foundation","product":"Eclipse Vert.x","affected":["eclipse_vert.x >= 4.0.0 <= 4.5.35","eclipse_vert.x >= 5.0.0 <= 5.2.2"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T15:45:05.420912Z"},"exploitAvailable":true,"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T15:45:31.203Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118487","references":[{"url":"https://github.com/vert-x3/vertx-stomp/security/advisories/GHSA-cchp-hff9-j7q7"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/521"},{"url":"https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/864"}],"tags":["cve.org","exploit-available"],"epss":0.00664,"epssPercentile":0.51847,"ingestedAt":"2026-11-05T20:33:06.272Z","slug":"CVE-2026-118487","body":"## Overview\n\nIn Eclipse Vert.x versions [4.0.0, 4.5.35] or [5.0.0, 5.2.2], the `FrameParser` in vertx-stomp creates a `RecordParser` without setting `maxRecordSize`, so any peer that streams bytes continuously without a newline character causes the parser to accumulate data indefinitely. Both the STOMP server and the STOMP client are affected: a malicious server can exploit this against a connecting client, and a malicious client can exploit this against a server before or after authentication. Sustained byte streaming exhausts JVM heap memory, crashing the affected process and causing a complete denial of service.\n\n## Affected\n\n- `eclipse_vert.x >= 4.0.0 <= 4.5.35`\n- `eclipse_vert.x >= 5.0.0 <= 5.2.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}