CVE-2019-17640

Path Traversal in Eclipse Vert

9.8 CriticalPublic exploitFix available

In Eclipse Vert.x 3.4.x up to 3.9.4, 4.0.0.milestone1, 4.0.0.milestone2, 4.0.0.milestone3, 4.0.0.milestone4, 4.0.0.milestone5, 4.0.0.Beta1, 4.0.0.Beta2, and 4.0.0.Beta3, StaticHandler doesn't correctly processes back slashes on Windows Operating systems, allowing, escape the webroot folder to the current working directory.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.00%Up 1.1 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2019-17640
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-23, CWE-22
Updated: 2026-11-02

CVE List No score

Record: CVE-2019-17640
Weakness: CWE-23
Updated: 2026-11-02

EUVDEUVD-2022-1208 No score

Record: EUVD-2022-1208
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vjw7-6gfq-6wf5 9.8

Path Traversal in Eclipse Vert

In Eclipse Vert.x 3.4.x up to 3.9.4, 4.0.0-milestone1, 4.0.0-milestone2, 4.0.0-milestone3, 4.0.0-milestone4, 4.0.0-milestone5, 4.0.0.Beta1, 4.0.0.Beta2, and 4.0.0.Beta3, StaticHandler doesn't correctly processes back slashes on Windows Operating systems, allowing, escape the webroot folder to the current working directory.

Record: GHSA-vjw7-6gfq-6wf5
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-22, CWE-23
Updated: 2026-11-02

OSV 9.8

Record: CVE-2019-17640
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-vjw7-6gfq-6wf5 9.8

Path Traversal in Eclipse Vert

Record: GHSA-vjw7-6gfq-6wf5
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-22, CWE-23
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`io.vertx:vertx-web` Maven	3.0.0 up to 3.9.4	3.9.4
`io.vertx:vertx-web` Maven	3.0.0 up to 3.9.4, plus listed versions 3.1.03.2.03.2.13.3.03.3.0.CR1 Show 37 moreShow less 3.3.0.CR23.3.13.3.23.3.33.4.03.4.0.Beta13.4.13.4.23.5.03.5.0.Beta13.5.13.5.23.5.2.CR13.5.2.CR23.5.2.CR33.5.33.5.3.CR13.5.43.6.03.6.0.CR13.6.0.CR23.6.13.6.23.6.33.7.03.7.13.8.03.8.13.8.23.8.33.8.3-013.8.43.8.53.9.03.9.13.9.23.9.3	3.9.4

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	shoucheng3/vert-x3__vertx-web_CVE-2019-17640_3-9-3	2025-08-20

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-17640 is a critical vulnerability (CVSS 9.8) in Eclipse Vert.x, published October 15, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.00%, the 80th percentile. Fixed in io.vertx:vertx-web 3.9.4.

References

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