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CVE-2026-118487— Heap exhaustion via unbounded line accumulation in Vert.x STOMP FrameParser

Quick assessment

Affected
Eclipse Foundation Eclipse Vert.x
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Eclipse Vert.x 版本 [4.0.0, 4.5.35] 或 [5.0.0, 5.2.2] 中， 模块的 在创建 时未设置 参数。因此，若任何对等端持续流式传输字节且不包含换行符，解析器将无限累积数据。STOMP 服务器和 STOMP 客户端均受此影响：恶意服务器可利用此漏洞攻击正在连接的客户端，而恶意客户端则可在认证前后对服务器发起攻击。持续的字节流会导致 JVM 堆内存耗尽，进而使受影响进程崩溃，造成完全的服务拒绝（DoS）。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-118487

Vulnerability Information
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Vulnerability Title
Heap exhaustion via unbounded line accumulation in Vert.x STOMP FrameParser
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation Eclipse Vert.x 4.0.0 ~ 4.5.35 -

II. Public POCs for CVE-2026-118487

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III. Intelligence Information for CVE-2026-118487

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Other References for CVE-2026-118487 (3)

Same Patch Batch · Eclipse Foundation · 2026-11-03 · 9 CVEs total

CVE-2026-89292 9.2 CRITICAL Unauthenticated SSRF with MNESTIX_BACKEND_API_KEY disclosure in Eclipse Mnestix Browser se
CVE-2026-89293 8.8 HIGH Missing server-side authorization in Eclipse Mnestix Browser admin server actions allows u
CVE-2026-115231 8.5 HIGH User-mode module can post forged callback requests to another module's callback queue, run
CVE-2026-118489 7.5 HIGH CachingWebClient shares user-specific HTTP responses across users via the shared cache tie
CVE-2026-113421 7.3 HIGH ThreadX Modules invokes trace-full callbacks after module unload
CVE-2026-118488 5.9 MEDIUM Heap exhaustion via unbounded simple string or bulk string allocation in Vert.x Redis clie
CVE-2026-92610 Improper limitation of paths in py-aspect-model-loader
CVE-2026-89295 Unauthenticated memory-exhaustion denial of service in Eclipse Mnestix AAS Generator unbou

IV. Related Vulnerabilities

Same product: Eclipse Vert.x
Same vendor: Eclipse Foundation
Same weakness: CWE-770