Signal is active with 1 mentions in latest observed window
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NVD description
Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
CVE-2026-8823 Privilege Escalation via Unvalidated Bot Target Demotion in Mattermost https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-8823
Post summary
This brief announcement highlights CVE-2026-8823 as a privilege‑escalation flaw in Mattermost, specifically involving unvalidated bot target demotion, and directs readers to a vulnerability details page.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | mattermost | mattermost_server | - | - | - |