Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost Advisory ID: MMSA-2026-00582
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.
⚡ New CVE Alert: CVE-2026-6333 📊 Severity: 3.5 🚨 Risk Level: Low 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-6333 #CVE-2026-6333 #CVE #Low #CyberSecurity #InfoSec https://t.co/fVkL4i8k1g
Post summary
The tweet simply announces the existence of CVE-2026-6333 with a low severity rating, without providing any further technical detail, exploitation code, or remediation advice.
CVE-2026-6333 Host Header Validation Bypass in Mattermost Slash Commands Authentication https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6333
Post summary
The text announces a host header validation bypass vulnerability in Mattermost slash commands, offering minimal technical details but no PoC, exploit, or patch information.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | mattermost | mattermost_server | - | - | - |