This page lists publicly disclosed CVE vulnerabilities affecting leostream connection_broker (linked via NVD CPE). Each row includes severity scores, summaries, and publication dates to help identify and analyze security issues.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| CVE-2021-41551 | Leostream Connection Broker 9.0.40.17 allows administrators to conduct directory traversal attacks by uploading z ZIP file that contains a symbolic link. | [email protected] | 4.9 | 1.27% | 2022-01-18 | 2026-06-17 |
| CVE-2021-41550 | Leostream Connection Broker 9.0.40.17 allows administrator to upload and execute Perl code. | [email protected] | 7.2 | 0.96% | 2022-01-18 | 2026-06-17 |
| CVE-2021-38157 | LeoStream Connection Broker 9.x before 9.0.34.3 allows Unauthenticated Reflected XSS via the /index.pl user parameter. NOTE: This vulnerability only affects products that are no longer supported by the maintainer | [email protected] | 6.1 | 1.12% | 2021-08-06 | 2026-06-17 |
| CVE-2020-26574 | Leostream Connection Broker 8.2.x is affected by stored XSS. An unauthenticated attacker can inject arbitrary JavaScript code via the webquery.pl User-Agent HTTP header. It is rendered by the admins the next time they log in. The JavaScript injected can be used to force the admin to upload a malicious Perl script that will be executed as root via libMisc::browser_client. NOTE: This vulnerability only affects products that are no longer supported by the maintainer | [email protected] | 9.6 | 2.09% | 2020-10-06 | 2026-06-16 |
| CVE-2018-18817 | The Leostream Agent before Build 7.0.1.0 when used with Leostream Connection Broker 8.2.72 or earlier allows remote attackers to modify registry keys via the Leostream Agent API. | [email protected] | 7.5 | 1.07% | 2018-10-29 | 2026-06-16 |