What is CVE-2020-8638?

CVE-2020-8638 is a critical-severity vulnerability in Testlink, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-04-03.

How severe is CVE-2020-8638?

Critical severity. CVSS v3 base score is 9.8 out of 10.

SQL Injection in Testlink

CVE-2020-8638

A SQL injection vulnerability in TestLink 1.9.20 allows attackers to execute arbitrary SQL commands in planUrgency.php via the urgency parameter.

Vulnerability class: SQL Injection

Published 2020-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Testlink — versions 1.9.20

Weakness classification (CWE)

CWE-89 — SQL Injection

References

ackcent.com/blog/testlink-1.9.20-unrestricted-file-upload-and-sql-injection/ (Exploit, Patch, Third Party Advisory)
github.com/TestLinkOpenSourceTRMS/testlink-code/commit/58f3cc03d5f81cd5cc2ad8c7… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8638?: CVE-2020-8638 is a critical-severity vulnerability in Testlink, classified under SQL Injection. CVSS score: 9.8/10. Published 2020-04-03.
How severe is CVE-2020-8638?: Critical severity. CVSS v3 base score is 9.8 out of 10.