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.

Multiple SQL injection vulnerabilities in TestLink through 1.9.19 allows remote authenticated users to execute arbitrary SQL commands via the (1) tproject_id parameter to keywordsView.php; the (2) req_spec_id parameter to reqSpecCompareRevisions.php; the (3) requirement_id parameter to reqCompareVersions.php; the (4) build_id parameter to planUpdateTC.php; the (5) tplan_id parameter to newest_tcversions.php; the (6) tplan_id parameter to tcCreatedPerUserGUI.php; the (7) tcase_id parameter to tcAssign2Tplan.php; or the (8) testcase_id parameter to tcCompareVersions.php. Authentication is often easy to achieve: a guest account, that can execute this attack, can be created by anyone in the default configuration.

An issue was discovered in TestLink 1.9.19. The relation_type parameter of the lib/requirements/reqSearch.php endpoint is vulnerable to authenticated SQL Injection.

TestLink before 1.9.20 allows XSS via non-lowercase javascript: in the index.php reqURI parameter. NOTE: this issue exists because of an incomplete fix for CVE-2019-19491.

TestLink 1.9.19 has XSS via the lib/testcases/archiveData.php edit parameter, the index.php reqURI parameter, or the URI in a lib/testcases/tcEdit.php?doAction=doDeleteStep request.

TestLink 1.9.19 has XSS via the error.php message parameter.

TestLink through 1.9.16 allows remote attackers to read arbitrary attachments via a modified ID field to /lib/attachments/attachmentdownload.php.

install/installNewDB.php in TestLink through 1.9.16 allows remote attackers to conduct injection attacks by leveraging control over DB LOGIN NAMES data during installation to provide a long, crafted value.

SQL injection vulnerability in TestLink before 1.9.14 allows remote attackers to execute arbitrary SQL commands via the apikey parameter to lnl.php.

Multiple cross-site scripting (XSS) vulnerabilities in TestLink before 1.9.14 allow remote attackers to inject arbitrary web script or HTML via the (1) selected_end_date or (2) selected_start_date parameter to lib/results/tcCreatedPerUserOnTestProject.php; the (3) containerType parameter to lib/testcases/containerEdit.php; the (4) filter_tc_id or (5) filter_testcase_name parameter to lib/testcases/listTestCases.php; the (6) useRecursion parameter to lib/testcases/tcImport.php; the (7) targetTestCase or (8) created_by parameter to lib/testcases/tcSearch.php; or the (9) HTTP Referer header to third_party/user_contribution/fakeRemoteExecServer/client4fakeXMLRPCTestRunner.php.