CVE-2020-8639

Name: CVE-2020-8639
Creator: NVD / NIST
Published: 2020-04-03T19:15:13.593+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 15.86%

Last modified Jun 17, 2026

CVE-2020-8639 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An unrestricted file upload vulnerability in keywordsImport.php in TestLink 1.9.20 allows remote attackers to execute arbitrary code by uploading a file with an executable extension. This allows an authenticated attacker to upload a malicious file (containing PHP code to execute operating system commands) to a publicly accessible directory of the application.. EPSS estimates a 15.86% chance of exploitation in the next 30 days.

Description

An unrestricted file upload vulnerability in keywordsImport.php in TestLink 1.9.20 allows remote attackers to execute arbitrary code by uploading a file with an executable extension. This allows an authenticated attacker to upload a malicious file (containing PHP code to execute operating system commands) to a publicly accessible directory of the application.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

15.86%

96.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Testlink	Testlink	1.9.20

References

http://packetstormsecurity.com/files/161401/TestLink-1.9.20-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
https://ackcent.com/blog/testlink-1.9.20-unrestricted-file-upload-and-sql-injection/Exploit, Patch, Third Party Advisory
https://github.com/TestLinkOpenSourceTRMS/testlink-code/commit/57d81ae350d569c5c95087997fe051c49e14516dPatch, Third Party Advisory
http://packetstormsecurity.com/files/161401/TestLink-1.9.20-Shell-Upload.htmlExploit, Third Party Advisory, VDB Entry
https://ackcent.com/blog/testlink-1.9.20-unrestricted-file-upload-and-sql-injection/Exploit, Patch, Third Party Advisory
https://github.com/TestLinkOpenSourceTRMS/testlink-code/commit/57d81ae350d569c5c95087997fe051c49e14516dPatch, Third Party Advisory

Timeline

Published: Apr 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8639?

How severe is CVE-2020-8639?

CVE-2020-8639 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 15.86% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8639?

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-2020-8639?

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

Scan your code now

Source: NVD / NIST