CVE-2019-20866
MEDIUM
5.3
CVSS Score
Published: June 19, 2020 at 03:13 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 0.9%
Description
An issue was discovered in Mattermost Server before 5.12.0. Use of a Proxy HTTP header, rather than the source address in an IP packet header, for obtaining IP address information was mishandled.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 5.12.0
Affected range stops below 5.12.0, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-444
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