CVE-2018-12541

mediumpriority · track · 27EPSS 0.027 · 86 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.65% (86th) EPSS

CVSS 4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the WebSocket HTTP upgrade implementation buffers the full http request before doing the handshake, holding the entire request body in memory. There should be a reasonnable limit (8192 bytes) above which the WebSocket gets an HTTP response with the 413 status code and the connection gets closed.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimaryCWE-119USCWE-789USCWE-789US

affected products (4)

Products and version ranges known to be affected.

The Eclipse Foundation Eclipse Vert.x≤ unspecified ≤3.5.3enisa_euvdEU
The Eclipse Foundation Eclipse Vert.x3.0 → unspecifiedenisa_euvdEU
eclipse vert.x3.0.0 → 3.5.4nvdUScpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
Maven io.vertx:vertx-core3.0.0 → 3.5.4osvUSpkg:maven/io.vertx/vertx-core

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-45xm-v8gq-7jqxExcessive memory allocation2018-10-17ghsa · osvUS
In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the WebSocket HTTP upgrade implementation buffers the full http request before doing the handshake, holding the entire request body in memory. There should be a reasonnable limit (8192 bytes) above which the WebSocket gets an HTTP response with the 413 status code and the connection gets closed.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-10-10modified 2026-06-17

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+21038 more

references (51)

External citations — patches, advisories, analysis.

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