CVE-2026-118487

Heap exhaustion via unbounded line accumulation in Vert.x STOMP FrameParser

Published Nov 3, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
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 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Eclipse
Eclipse vert.x
Eclipse Foundation
Eclipse Foundation vert.x
Vendors & Products Eclipse
Eclipse vert.x
Eclipse Foundation
Eclipse Foundation vert.x
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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 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.
Title Heap exhaustion via unbounded line accumulation in Vert.x STOMP FrameParser
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
eclipse
Published
Updated
Nov 3, 2026, 3:45 PM
Reserved
Oct 28, 2026, 11:32 AM
Status
Awaiting Analysis
Published
Nov 3, 2026, 4:17 PM
Modified
Nov 3, 2026, 4:30 PM