Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to appropriately check for valid namespaces which allows plugin users to create subscriptions to groups that were not whitelisted via creating groups that share the same prefix as a whitelisted group. Mattermost Advisory ID: MMSA-2026-00601
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-2026-6342 📊 Severity: 4.3 🚨 Risk Level: Medium 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-6342 #CVE-2026-6342 #CVE #Medium #CyberSecurity #InfoSec https://t.co/QsVlrfdQ4Z
Post summary
A new CVE (CVE-2026-6342) with a severity rating of 4.3 and medium risk level has been posted, affecting multiple unspecified products, with a link to the NVD detail page.
CVE-2026-6342 Namespace Validation Bypass in Mattermost Plugins Allows U... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-6342 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2
Post summary
The tweet merely announces the existence of CVE‑2026‑6342 without providing technical details, PoC, or exploitation information.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | mattermost | mattermost_server | - | - | - |