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56 vulnerabilities found for mattermost_desktop by mattermost
CVE-2026-8683 (GCVE-0-2026-8683)
Vulnerability from nvd – Published: 2026-06-15 14:06 – Updated: 2026-06-15 16:06
VLAI
EPSS
VEX
Title
Overly long URLs crash the Mattermost Desktop App
Summary
Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App which allows a malicious server owner to crash the application via including a script to call window.open on a very large URL. Mattermost Advisory ID: MMSA-2026-00652
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.5.13
(semver)
Unaffected: 6.2.0 Unaffected: 5.13.6.0 |
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CVE-2026-6517 (GCVE-0-2026-6517)
Vulnerability from nvd – Published: 2026-06-15 13:55 – Updated: 2026-06-15 16:00
VLAI
EPSS
VEX
Title
Mattermost Desktop App fails to restrict the allow list of domains which NTLM credentials are passed
Summary
Mattermost Desktop App versions <=6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that routes to an external web server. Mattermost Advisory ID: MMSA-2026-00651
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.5.13
(semver)
Unaffected: 6.2.0 Unaffected: 5.13.6.0 |
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CVE-2026-4643 (GCVE-0-2026-4643)
Vulnerability from nvd – Published: 2026-05-18 08:43 – Updated: 2026-05-18 14:36
VLAI
EPSS
VEX
Title
Calling window.close() from server-side content causes crash in the Mattermost Desktop App
Summary
Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking {{window.close()}} in the renderer context, leading to a denial of service condition at the client level. Mattermost Advisory ID: MMSA-2026-00633
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.1
(semver)
Affected: 0 , ≤ 5.4.13 (semver) Unaffected: 6.2.0 Unaffected: 6.1.1.0 Unaffected: 5.13.5.0 |
Credits
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CVE-2026-3471 (GCVE-0-2026-3471)
Vulnerability from nvd – Published: 2026-05-18 08:45 – Updated: 2026-05-18 14:35
VLAI
EPSS
VEX
Title
Opening a window with {{javascript:alert()}} as URL causes crash in the Mattermost Desktop App
Summary
Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling {{window.open('javascript:alert()');}}. Mattermost Advisory ID: MMSA-2026-00618
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-939 - Improper Authorization in Handler for Custom URL Scheme
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.1
(semver)
Affected: 0 , ≤ 5.4.13 (semver) Unaffected: 6.2.0 Unaffected: 6.1.1.0 Unaffected: 5.13.5.0 |
Credits
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CVE-2026-1628 (GCVE-0-2026-1628)
Vulnerability from nvd – Published: 2026-03-02 13:24 – Updated: 2026-03-02 14:58
VLAI
EPSS
VEX
Title
Mattermost allows external websites to open within the app, exposing preload functionality to non-trusted sites.
Summary
Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which allows a malicious server to expose preload script functionality to untrusted servers via having a user open an external link in their Mattermost server. Mattermost Advisory ID: MMSA-2026-00596
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.13.3
(semver)
Unaffected: 5.13.4.0 |
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CVE-2026-1046 (GCVE-0-2026-1046)
Vulnerability from nvd – Published: 2026-02-16 12:10 – Updated: 2026-02-17 17:05
VLAI
EPSS
VEX
Title
Arbitrary application execution via unvalidated server-controlled URLs in Help menu
Summary
Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-939 - Improper Authorization in Handler for Custom URL Scheme
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.2.0
(semver)
Affected: 0 , ≤ 5.2.13 (semver) Unaffected: 6.1.0 Unaffected: 6.0.3.0 Unaffected: 5.13.3.0 |
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CVE-2025-13326 (GCVE-0-2025-13326)
Vulnerability from nvd – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI
EPSS
VEX
Title
Mattermost Desktop App fails to enable Hardened Runtime when packaged for Mac App Store
Summary
Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC permissions via copying the binary to a tmp folder.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.0
(semver)
Unaffected: 6.0.0 |
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CVE-2025-13321 (GCVE-0-2025-13321)
Vulnerability from nvd – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI
EPSS
VEX
Title
Mattermost Desktop App logging sensitive information and fails to clear data on server deletion
Summary
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-532 - Insertion of Sensitive Information into Log Files
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.0
(semver)
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CVE-2025-55035 (GCVE-0-2025-55035)
Vulnerability from nvd – Published: 2025-10-16 15:18 – Updated: 2025-10-16 16:28
VLAI
EPSS
VEX
Title
Mattermost Desktop DoS when user has basic authentication server configured
Summary
Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.0.13
(semver)
Unaffected: 5.13.1.0 |
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CVE-2025-58084 (GCVE-0-2025-58084)
Vulnerability from nvd – Published: 2025-10-13 19:57 – Updated: 2025-10-14 14:28
VLAI
EPSS
VEX
Title
Mattermost Desktop App crashes when clicking on malformed external URL
Summary
Mattermost Desktop App versions <= 5.13.0 fail to validate URLs external to the configured Mattermost servers, allowing an attacker on a server the user has configured to crash the user's application by sending the user a malformed URL.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.13.0
(semver)
Unaffected: 5.13.1 |
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CVE-2025-1398 (GCVE-0-2025-1398)
Vulnerability from nvd – Published: 2025-03-17 14:19 – Updated: 2025-03-31 15:38
VLAI
EPSS
VEX
Title
macOS TCC Bypass via Code Injection
Summary
Mattermost Desktop App versions <=5.10.0 explicitly declared unnecessary macOS entitlements which allows an attacker with remote access to bypass Transparency, Consent, and Control (TCC) via code injection.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.10.0
(semver)
Unaffected: 5.11.0 |
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CVE-2024-45835 (GCVE-0-2024-45835)
Vulnerability from nvd – Published: 2024-09-16 14:27 – Updated: 2024-09-16 14:42
VLAI
EPSS
VEX
Title
Insufficient Electron Fuses Configuration
Summary
Mattermost Desktop App versions <=5.8.0 fail to sufficiently configure Electron Fuses which allows an attacker to gather Chromium cookies or abuse other misconfigurations via remote/local access.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.8.0
(semver)
Unaffected: 5.9.0 |
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CVE-2024-39772 (GCVE-0-2024-39772)
Vulnerability from nvd – Published: 2024-09-16 14:27 – Updated: 2024-09-16 14:42
VLAI
EPSS
VEX
Title
Silent Desktop Screenshot Capture
Summary
Mattermost Desktop App versions <=5.8.0 fail to safeguard screen capture functionality which allows an attacker to silently capture high-quality screenshots via JavaScript APIs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.8.0
(semver)
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CVE-2024-39613 (GCVE-0-2024-39613)
Vulnerability from nvd – Published: 2024-09-16 06:40 – Updated: 2024-09-16 13:05
VLAI
EPSS
VEX
Title
RCE in desktop app in Windows by local attacker
Summary
Mattermost Desktop App versions <=5.8.0 fail to specify an absolute path when searching the cmd.exe file, which allows a local attacker who is able to put an cmd.exe file in the Downloads folder of a user's machine to cause remote code execution on that machine.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.8.0
(semver)
Unaffected: 5.9.0 |
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CVE-2024-37182 (GCVE-0-2024-37182)
Vulnerability from nvd – Published: 2024-06-14 08:39 – Updated: 2024-08-02 03:50
VLAI
EPSS
VEX
Title
Lack of permissions prompting when opening external URLs
Summary
Mattermost Desktop App versions <=5.7.0 fail to correctly prompt for permission when opening external URLs which allows a remote attacker to force a victim over the Internet to run arbitrary programs on the victim's system via custom URI schemes.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.7.0
(semver)
Unaffected: 5.8.0 |
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CVE-2024-36287 (GCVE-0-2024-36287)
Vulnerability from nvd – Published: 2024-06-14 08:39 – Updated: 2024-08-02 03:37
VLAI
EPSS
VEX
Title
Bypass of TCC restrictions on macOS
Summary
Mattermost Desktop App versions <=5.7.0 fail to disable certain Electron debug flags which allows for bypassing TCC restrictions on macOS.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.7.0
(semver)
Unaffected: 5.8.0 |
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CVE-2026-8683 (GCVE-0-2026-8683)
Vulnerability from cvelistv5 – Published: 2026-06-15 14:06 – Updated: 2026-06-15 16:06
VLAI
EPSS
VEX
Title
Overly long URLs crash the Mattermost Desktop App
Summary
Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost Desktop App which allows a malicious server owner to crash the application via including a script to call window.open on a very large URL. Mattermost Advisory ID: MMSA-2026-00652
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.5.13
(semver)
Unaffected: 6.2.0 Unaffected: 5.13.6.0 |
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CVE-2026-6517 (GCVE-0-2026-6517)
Vulnerability from cvelistv5 – Published: 2026-06-15 13:55 – Updated: 2026-06-15 16:00
VLAI
EPSS
VEX
Title
Mattermost Desktop App fails to restrict the allow list of domains which NTLM credentials are passed
Summary
Mattermost Desktop App versions <=6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that routes to an external web server. Mattermost Advisory ID: MMSA-2026-00651
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-522 - Insufficiently Protected Credentials
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.5.13
(semver)
Unaffected: 6.2.0 Unaffected: 5.13.6.0 |
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CVE-2026-3471 (GCVE-0-2026-3471)
Vulnerability from cvelistv5 – Published: 2026-05-18 08:45 – Updated: 2026-05-18 14:35
VLAI
EPSS
VEX
Title
Opening a window with {{javascript:alert()}} as URL causes crash in the Mattermost Desktop App
Summary
Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling {{window.open('javascript:alert()');}}. Mattermost Advisory ID: MMSA-2026-00618
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-939 - Improper Authorization in Handler for Custom URL Scheme
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.1
(semver)
Affected: 0 , ≤ 5.4.13 (semver) Unaffected: 6.2.0 Unaffected: 6.1.1.0 Unaffected: 5.13.5.0 |
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CVE-2026-4643 (GCVE-0-2026-4643)
Vulnerability from cvelistv5 – Published: 2026-05-18 08:43 – Updated: 2026-05-18 14:36
VLAI
EPSS
VEX
Title
Calling window.close() from server-side content causes crash in the Mattermost Desktop App
Summary
Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking {{window.close()}} in the renderer context, leading to a denial of service condition at the client level. Mattermost Advisory ID: MMSA-2026-00633
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.1
(semver)
Affected: 0 , ≤ 5.4.13 (semver) Unaffected: 6.2.0 Unaffected: 6.1.1.0 Unaffected: 5.13.5.0 |
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CVE-2026-1628 (GCVE-0-2026-1628)
Vulnerability from cvelistv5 – Published: 2026-03-02 13:24 – Updated: 2026-03-02 14:58
VLAI
EPSS
VEX
Title
Mattermost allows external websites to open within the app, exposing preload functionality to non-trusted sites.
Summary
Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which allows a malicious server to expose preload script functionality to untrusted servers via having a user open an external link in their Mattermost server. Mattermost Advisory ID: MMSA-2026-00596
Severity
4.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.13.3
(semver)
Unaffected: 5.13.4.0 |
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CVE-2026-1046 (GCVE-0-2026-1046)
Vulnerability from cvelistv5 – Published: 2026-02-16 12:10 – Updated: 2026-02-17 17:05
VLAI
EPSS
VEX
Title
Arbitrary application execution via unvalidated server-controlled URLs in Help menu
Summary
Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-939 - Improper Authorization in Handler for Custom URL Scheme
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://mattermost.com/security-updates | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.2.0
(semver)
Affected: 0 , ≤ 5.2.13 (semver) Unaffected: 6.1.0 Unaffected: 6.0.3.0 Unaffected: 5.13.3.0 |
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CVE-2025-13326 (GCVE-0-2025-13326)
Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI
EPSS
VEX
Title
Mattermost Desktop App fails to enable Hardened Runtime when packaged for Mac App Store
Summary
Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC permissions via copying the binary to a tmp folder.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.0
(semver)
Unaffected: 6.0.0 |
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CVE-2025-13321 (GCVE-0-2025-13321)
Vulnerability from cvelistv5 – Published: 2025-12-17 18:14 – Updated: 2025-12-17 19:29
VLAI
EPSS
VEX
Title
Mattermost Desktop App logging sensitive information and fails to clear data on server deletion
Summary
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-532 - Insertion of Sensitive Information into Log Files
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 6.0.0
(semver)
Unaffected: 6.0.0 |
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CVE-2025-55035 (GCVE-0-2025-55035)
Vulnerability from cvelistv5 – Published: 2025-10-16 15:18 – Updated: 2025-10-16 16:28
VLAI
EPSS
VEX
Title
Mattermost Desktop DoS when user has basic authentication server configured
Summary
Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.0.13
(semver)
Unaffected: 5.13.1.0 |
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CVE-2025-58084 (GCVE-0-2025-58084)
Vulnerability from cvelistv5 – Published: 2025-10-13 19:57 – Updated: 2025-10-14 14:28
VLAI
EPSS
VEX
Title
Mattermost Desktop App crashes when clicking on malformed external URL
Summary
Mattermost Desktop App versions <= 5.13.0 fail to validate URLs external to the configured Mattermost servers, allowing an attacker on a server the user has configured to crash the user's application by sending the user a malformed URL.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1287 - Improper Validation of Specified Type of Input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.13.0
(semver)
Unaffected: 5.13.1 |
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CVE-2025-1398 (GCVE-0-2025-1398)
Vulnerability from cvelistv5 – Published: 2025-03-17 14:19 – Updated: 2025-03-31 15:38
VLAI
EPSS
VEX
Title
macOS TCC Bypass via Code Injection
Summary
Mattermost Desktop App versions <=5.10.0 explicitly declared unnecessary macOS entitlements which allows an attacker with remote access to bypass Transparency, Consent, and Control (TCC) via code injection.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-426 - Untrusted Search Path
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.10.0
(semver)
Unaffected: 5.11.0 |
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CVE-2024-45835 (GCVE-0-2024-45835)
Vulnerability from cvelistv5 – Published: 2024-09-16 14:27 – Updated: 2024-09-16 14:42
VLAI
EPSS
VEX
Title
Insufficient Electron Fuses Configuration
Summary
Mattermost Desktop App versions <=5.8.0 fail to sufficiently configure Electron Fuses which allows an attacker to gather Chromium cookies or abuse other misconfigurations via remote/local access.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.8.0
(semver)
Unaffected: 5.9.0 |
Credits
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CVE-2024-39772 (GCVE-0-2024-39772)
Vulnerability from cvelistv5 – Published: 2024-09-16 14:27 – Updated: 2024-09-16 14:42
VLAI
EPSS
VEX
Title
Silent Desktop Screenshot Capture
Summary
Mattermost Desktop App versions <=5.8.0 fail to safeguard screen capture functionality which allows an attacker to silently capture high-quality screenshots via JavaScript APIs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-284 - Improper Access Control
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.8.0
(semver)
Unaffected: 5.9.0 |
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CVE-2024-39613 (GCVE-0-2024-39613)
Vulnerability from cvelistv5 – Published: 2024-09-16 06:40 – Updated: 2024-09-16 13:05
VLAI
EPSS
VEX
Title
RCE in desktop app in Windows by local attacker
Summary
Mattermost Desktop App versions <=5.8.0 fail to specify an absolute path when searching the cmd.exe file, which allows a local attacker who is able to put an cmd.exe file in the Downloads folder of a user's machine to cause remote code execution on that machine.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-427 - Uncontrolled Search Path Element
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Mattermost | Mattermost |
Affected:
0 , ≤ 5.8.0
(semver)
Unaffected: 5.9.0 |
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