CVE-2026-12284
Last modified
CVE-2026-12284 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. Mattermost Desktop App versions <=6.2 6.2.2.0 fails to validate the IPC sender in the leaveCall handler which allows a malicious or compromised Mattermost server (or a user with script access to a connected server view) to disconnect an active call belonging to a different connected server via the desktopAPI.leaveCall IPC message. Mattermost Advisory ID: MMSA-2026-00699.
Description
Mattermost Desktop App versions <=6.2 6.2.2.0 fails to validate the IPC sender in the leaveCall handler which allows a malicious or compromised Mattermost server (or a user with script access to a connected server view) to disconnect an active call belonging to a different connected server via the desktopAPI.leaveCall IPC message. Mattermost Advisory ID: MMSA-2026-00699
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | <= 6.2.2 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-12284?
How severe is CVE-2026-12284?
How do I fix CVE-2026-12284?
How Strix Helps
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-12275The Tutor LMS WordPress plugin before 3.9.13 does not, in i…7.1
- CVE-2026-12276The LA-Studio Element Kit for Elementor WordPress plugin bef…5.3
- CVE-2026-12277The Frontend File Manager Plugin WordPress plugin through 23…8.7
- CVE-2026-1228The Timeline Block – Beautiful Timeline Builder for WordPres…4.3
- CVE-2026-12281The Shibboleth WordPress plugin before 2.5.4 does not fail c…8.1
- CVE-2026-12283Amazon Athena is a serverless, interactive query service tha…6.8
- CVE-2026-12285Use After Free vulnerability in Arm Ltd Bifrost GPU Kernel D…4
- CVE-2026-12289Privilege escalation in the Graphics: WebRender component. T…8.8
- CVE-2026-1229The CombinedMult function in the CIRCL ecc/p384 package (sec…9.8
- CVE-2026-12290Memory safety bug fixed in Firefox 152. This vulnerability w…8.1
- CVE-2026-12291Use-after-free in the Networking: HTTP component. This vulne…8.8
- CVE-2026-12292Incorrect boundary conditions in the Web Audio component. Th…8.1
Are you affected by CVE-2026-12284?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST