CVE-2026-3471
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mattermost | Mattermost | 0 <= 6.0.1 | affected |
| Mattermost | Mattermost | 0 <= 5.4.13 | affected |
| Mattermost | Mattermost | 6.2.0 | unaffected |
| Mattermost | Mattermost | 6.1.1.0 | unaffected |
| Mattermost | Mattermost | 5.13.5.0 | unaffected |
Weaknesses
- CWE-939: CWE-939: Improper Authorization in Handler for Custom URL Scheme
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.