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Vulnerability record · CVE-2021-37788 · published 9 August 2021

CVE-2021-37788: Gurock testrail clickjacking vulnerability

Gurock · Testrail

A vulnerability in the web UI of Gurock TestRail v5.3.0.3603 could allow an unauthenticated, remote attacker to affect the integrity of a device via a clickjacking attack. The vulnerability is due to insufficient input validation of iFrame data in HTTP requests that are sent to an affected device. An attacker could exploit this vulnerability by sending crafted HTTP packets with malicious iFrame data. A successful exploit could allow the attacker to perform a clickjacking attack where the user is tricked into clicking a malicious link.

5.4 CVSS 3.1 Medium EPSS 1.5% · top 26.4% CWE-1021 · Clickjacking
5.4CVSS 3.1 base score, v2 4.3
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability in the web UI of Gurock TestRail v5.3.0.3603 could allow an unauthenticated, remote attacker to affect the integrity of a device via a clickjacking attack. The vulnerability is due to insufficient input validation of iFrame data in HTTP requests that are sent to an affected device. An attacker could exploit this vulnerability by sending crafted HTTP packets with malicious iFrame data. A successful exploit could allow the attacker to perform a clickjacking attack where the user is tricked into clicking a malicious link.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/rvismit/67bc11dd9ccb7423827564cb81d25740 ExploitThird Party Advisory
https://gist.github.com/rvismit/67bc11dd9ccb7423827564cb81d25740 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2018-20063Gurock testrail unrestricted file upload vulnerabilityAn issue was discovered in Gurock TestRail 5.6.0.3853. An "Unrestricted Upload of File" vulnerability exists in the image-upload form (available in t…EPSS 2.7%7.5CVE-2021-40875Gurock TestRail improper access control exposes file list and secretsTestRail versions before 7.2.0.3014 allow unauthenticated access to the /files.md5 file, which lists application files and their paths. Those paths c…EPSS 48%analysed5.4CVE-2021-36538Gurock testrail cross-site scripting vulnerabilityCross Site Scripting (XSS) vulnerability in Gurock TestRail before 7.1.2 allows remote authenticated attackers to run arbitrary code via the referenc…EPSS 0.55%5.4CVE-2021-44263Gurock testrail cross-site scripting vulnerabilityGurock TestRail before 7.2.4 mishandles HTML escaping.EPSS 0.59%5.3CVE-2019-7535Gurock testrail information exposure vulnerabilityindex.php in Gurock TestRail 5.3.0.3603 returns potentially sensitive information for an invalid request, as demonstrated by full path disclosure and…EPSS 1.1%4.3CVE-2014-4857Gurock testrail cross-site scripting vulnerabilityCross-site scripting (XSS) vulnerability in Gurock TestRail before 3.1.3 allows remote attackers to inject arbitrary web script or HTML via the Creat…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2021-37788), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.