| CVE-2020-14459 | 高7.5 | An issue was discovered in Mattermost Server before 5.19.0. Attackers can rename a channel and cause a collision with a direct message, aka MMSA-2020-0002. | 19/06/2020 |
| CVE-2020-14458 | 高7.5 | An issue was discovered in Mattermost Server before 5.19.0. Attackers can discover private channels via the "get channel by name" API, aka MMSA-2020-0004. | 19/06/2020 |
| CVE-2020-14457 | 中5.3 | An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the update_team WebSocket event, aka MMSA-2020-0012. | 19/06/2020 |
| CVE-2020-14456 | 高7.3 | An issue was discovered in Mattermost Desktop App before 4.4.0. The Same Origin Policy is mishandled during access-control decisions for web APIs, aka MMSA-2020-0006. | 19/06/2020 |
| CVE-2020-14455 | 中6.5 | An issue was discovered in Mattermost Desktop App before 4.4.0. Prompting for HTTP Basic Authentication is mishandled, allowing phishing, aka MMSA-2020-0007. | 19/06/2020 |
| CVE-2020-14454 | 中6.1 | An issue was discovered in Mattermost Desktop App before 4.4.0. Attackers can open web pages in the desktop application because server redirection is mishandled, aka MMSA-2020-0008. | 19/06/2020 |
| CVE-2020-14453 | 高7.5 | An issue was discovered in Mattermost Server before 5.21.0. Socket read operations are not appropriately restricted, which allows attackers to cause a denial of service, aka MMSA-2020-0005. | 19/06/2020 |
| CVE-2020-14452 | 中5.3 | An issue was discovered in Mattermost Server before 5.21.0. mmctl allows directory traversal via HTTP, aka MMSA-2020-0014. | 19/06/2020 |
| CVE-2020-14451 | 高7.5 | An issue was discovered in Mattermost Mobile Apps before 1.29.0. The iOS app allowed Single Sign-On cookies and Local Storage to remain after a logout, aka MMSA-2020-0013. | 19/06/2020 |
| CVE-2020-14450 | 高7.5 | An issue was discovered in Mattermost Server before 5.22.0. The markdown renderer allows attackers to cause a denial of service (client-side), aka MMSA-2020-0017. | 19/06/2020 |
| CVE-2020-14449 | 高7.5 | An issue was discovered in Mattermost Mobile Apps before 1.30.0. Authorization tokens can sometimes be disclosed to third-party servers, aka MMSA-2020-0018. | 19/06/2020 |
| CVE-2020-14448 | 高7.5 | An issue was discovered in Mattermost Server before 5.23.0. Automatic direct message replies allow attackers to cause a denial of service (infinite loop), aka MMSA-2020-0020. | 19/06/2020 |
| CVE-2020-14447 | 高7.5 | An issue was discovered in Mattermost Server before 5.23.0. Large webhook requests allow attackers to cause a denial of service (infinite loop), aka MMSA-2020-0021. | 19/06/2020 |
| CVE-2019-20850 | 中5.3 | An issue was discovered in Mattermost Mobile Apps before 1.26.0. A view cache can persist on a device after a logout. | 19/06/2020 |
| CVE-2019-20849 | 中5.3 | An issue was discovered in Mattermost Mobile Apps before 1.26.0. Cookie data can persist on a device after a logout. | 19/06/2020 |
| CVE-2019-20848 | 高7.5 | An issue was discovered in Mattermost Mobile Apps before 1.26.0. The Quick Reply feature mishandles crafted replies. | 19/06/2020 |
| CVE-2019-20847 | 中5.3 | An issue was discovered in Mattermost Server before 5.18.0. An attacker can send a user_typing WebSocket event to any channel. | 19/06/2020 |
| CVE-2019-20846 | 高7.5 | An issue was discovered in Mattermost Server before 5.18.0. It has weak permissions for server-local file storage. | 19/06/2020 |
| CVE-2019-20845 | 高7.5 | An issue was discovered in Mattermost Server before 5.18.0. It allows attackers to cause a denial of service (memory consumption) via a large Slack import. | 19/06/2020 |
| CVE-2019-20844 | 中6.5 | An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. An attacker can spoof a direct-message channel by changing the type of a channel. | 19/06/2020 |