How severe is CVE-2018-20063?

CVE-2018-20063 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-20063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20063?

CVE-2018-20063 affects Gurock Testrail. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-20063 published?

CVE-2018-20063 was published on 2019-02-25 and last updated on 2026-06-17.

CVE-2018-20063

CVE-2018-20063 is a high-severity vulnerability in Gurock Testrail with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Gurock Testrail
Published: 2019-02-25
Last modified: 2026-06-17

Description

An issue was discovered in Gurock TestRail 5.6.0.3853. An "Unrestricted Upload of File" vulnerability exists in the image-upload form (available in the description editor), allowing remote authenticated users to execute arbitrary code by uploading an image file with an executable extension but a safe Content-Type value, and then accessing it via a direct request to the file in the file-upload directory (if it's accessible according to the server configuration).

Frequently asked questions

What is CVE-2018-20063?: An issue was discovered in Gurock TestRail 5.6.0.3853. An "Unrestricted Upload of File" vulnerability exists in the image-upload form (available in the description editor), allowing remote authenticated users to execute arbitrary code by uploading an image file with an executable extension but a safe Content-Type value, and then accessing it via a direct request to the file in the file-upload directory (if it's accessible according to the server configuration).
How severe is CVE-2018-20063?: CVE-2018-20063 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-20063 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20063?: CVE-2018-20063 affects Gurock Testrail. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20063?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-20063 published?: CVE-2018-20063 was published on 2019-02-25 and last updated on 2026-06-17.

References

https://medium.com/%40vrico315/unrestricted-upload-of-file-with-dangerous-type-in-gurocks-testrail-11d9f4d13688

Affected products (1)

cpe:2.3:a:gurock:testrail:5.6.0.3853:*:*:*:*:*:*:*

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