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Mattermost

626 known vulnerabilities

21
CRITICAL
90
HIGH
384
MEDIUM
128
LOW

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mattermost server 467 mattermost 77 mattermost desktop 31 mattermost mobile 21 confluence 14 legal hold 2 focalboard 2 ms teams 2 zoom 2 playbooks 2
623 CVEs · Page 11/13
5.3
CVE-2016-11062

An issue was discovered in Mattermost Server before 3.5.1. E-mail address verification can be bypassed.

7.5
CVE-2015-9548

An issue was discovered in Mattermost Server before 1.2.0. It allows attackers to cause a denial of service (memory cons

9.8
CVE-2017-18912

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. It allows an attacker to specify a full pat

9.1
CVE-2017-18911

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be ski

4.3
CVE-2017-18910

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. E-mail notifications can have spoofed links

7.5
CVE-2017-18909

An issue was discovered in Mattermost Server before 3.9.0 when SAML is used. Encryption and signature verification are n

6.1
CVE-2017-18904

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. It allows XSS via an uploaded file.

8.8
CVE-2017-18903

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. CSRF can occur if CORS is enabled.

5.3
CVE-2017-18902

An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows attackers to discover team invit

5.3
CVE-2017-18901

An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows attackers to discover a team inv

9.8
CVE-2017-18900

An issue was discovered in Mattermost Server before 4.1.0, 4.0.4, and 3.10.3. It allows CSV injection via a compliance r

5.3
CVE-2017-18899

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It mishandles IP-based rate limiting.

5.3
CVE-2017-18898

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows crafted posts that potentially ca

6.1
CVE-2017-18897

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider.

5.3
CVE-2017-18896

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows attackers to add DEBUG lines to t

5.3
CVE-2017-18895

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows attackers to obtain sensitive inf

8.1
CVE-2017-18894

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider.

6.1
CVE-2017-18893

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. Display names allow XSS.

6.1
CVE-2017-18892

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. E-mail templates can have a field in which

6.1
CVE-2017-18891

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows Phishing because an error page ca

4.3
CVE-2017-18890

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows an attacker to create a button th

4.3
CVE-2017-18889

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. An attacker could create fictive system-mes

9.8
CVE-2017-18888

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows SQL injection during the fetching

5.3
CVE-2017-18887

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It discloses the team creator's e-mail addr

8.8
CVE-2017-18886

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows a bypass of restrictions on use o

9.8
CVE-2017-18885

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by a

8.1
CVE-2017-18884

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by u

9.1
CVE-2017-18883

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2, when serving as an OAuth 2.0 Service Provid

6.1
CVE-2017-18882

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS can occur via OpenGraph data.

6.1
CVE-2017-18881

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via a goto_location respons

6.1
CVE-2017-18880

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the title_link field of

6.1
CVE-2017-18879

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field o

4.3
CVE-2017-18878

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. Knowledge of a session ID allows revoking a

6.5
CVE-2017-18874

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2 when local storage for files is used. A Syst

8.8
CVE-2018-21264

An issue was discovered in Mattermost Server before 4.7.0, 4.6.2, and 4.5.2. It did not enforce the expiration date of a

4.3
CVE-2018-21256

An issue was discovered in Mattermost Server before 5.1. It allows attackers to bypass intended access restrictions (for

4.3
CVE-2018-21252

An issue was discovered in Mattermost Server before 5.2, 5.1.1, 5.0.3, and 4.10.3. Attackers could use multiple e-mail a

5.3
CVE-2017-18873

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to cause a denial of se

4.3
CVE-2017-18872

An issue was discovered in Mattermost Server before 4.4.3 and 4.3.3. Attackers could reconfigure an OAuth app in some ca

4.3
CVE-2019-20890

An issue was discovered in Mattermost Server before 5.7. It allows a bypass of e-mail address discovery restrictions.

5.3
CVE-2019-20889

An issue was discovered in Mattermost Server before 5.7, 5.6.3, 5.5.2, and 4.10.5. It mishandles permissions for user-ac

7.5
CVE-2019-20888

An issue was discovered in Mattermost Server before 5.7, 5.6.3, 5.5.2, and 4.10.5. It allows attackers to cause a denial

4.3
CVE-2019-20887

An issue was discovered in Mattermost Server before 5.7.1, 5.6.4, 5.5.3, and 4.10.6. It does not honor flags API permiss

7.5
CVE-2019-20886

An issue was discovered in Mattermost Server before 5.8.0. The first user is sometimes inadvertently a system admin.

7.5
CVE-2019-20885

An issue was discovered in Mattermost Server before 5.8.0. It does not always generate a robots.txt file.

5.3
CVE-2019-20884

An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than o

4.3
CVE-2019-20883

An issue was discovered in Mattermost Server before 5.8.0, when Town Square is set to Read-Only. Users can pin or unpin

5.3
CVE-2019-20882

An issue was discovered in Mattermost Server before 5.8.0. It does not honor the domain requirement when processing a jo

7.3
CVE-2019-20881

An issue was discovered in Mattermost Server before 5.8.0. It mishandles brute-force attacks against MFA.

7.5
CVE-2019-20880

An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. It allows attackers to cause a deni

Frequently Asked Questions

How many CVEs affect Mattermost?

Mattermost has 626 CVE records in our database, including 21 critical and 90 high severity vulnerabilities.

What are the most severe Mattermost vulnerabilities?

Mattermost has 21 critical severity (CVSS 9.0+) and 90 high severity (CVSS 7.0-8.9) vulnerabilities. Review the list above sorted by publication date to find the most recent high-severity issues.

How can I scan for Mattermost vulnerabilities?

CyberStrike's AI-powered security agents automatically detect vulnerabilities in Mattermost products across your infrastructure. The platform provides continuous pentesting, DAST scanning, and real-time vulnerability monitoring with actionable remediation guidance.

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