CVE-2019-20847

MEDIUM
5.3
CVSS Score
Published: June 19, 2020 at 01:31 PM UTC
Updated: June 17, 2026 at 02:31 AM UTC
1 product affected across 1 vendorMattermost Server

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.8%

Description

An issue was discovered in Mattermost Server before 5.18.0. An attacker can send a user_typing WebSocket event to any channel.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.18.0
Affected range stops below 5.18.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
https://mattermost.com/security-updates/

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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