CVE-2020-13128

Name: CVE-2020-13128
Creator: NVD / NIST
Published: 2020-05-18T00:15:11.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.61%

Last modified Jun 17, 2026

CVE-2020-13128 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Manolo GWTUpload 1.0.3. server/UploadServlet.java (the servlet for handling file upload) accepts a delay parameter that causes a thread to sleep. EPSS estimates a 1.61% chance of exploitation in the next 30 days.

Description

An issue was discovered in Manolo GWTUpload 1.0.3. server/UploadServlet.java (the servlet for handling file upload) accepts a delay parameter that causes a thread to sleep. It can be abused to cause all of a server's threads to sleep, leading to denial of service.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.61%

72.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Gwtupload Project	Gwtupload	1.0.3

References

https://github.com/manolo/gwtupload/issues/33Exploit, Third Party Advisory
https://logicaltrust.net/blog/2020/02/gwt-upload.htmlExploit, Third Party Advisory
https://github.com/manolo/gwtupload/issues/33Exploit, Third Party Advisory
https://logicaltrust.net/blog/2020/02/gwt-upload.htmlExploit, Third Party Advisory

Timeline

Published: May 18, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13128?

How severe is CVE-2020-13128?

CVE-2020-13128 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.61% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13128?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13128?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST