CVE-2023-47865

Username and Icon override can be used by members when Hardened Mode is enabled

MEDIUM
4.3
CVSS Score
Published: November 27, 2023 at 09:05 AM UTC
Updated: June 17, 2026 at 06:33 AM UTC
1 product affected across 1 vendorMattermost

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.4%

Description

Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled

Affected

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

v ≤ 7.8.12v ≤ 8.1.38.0.0 ≤ v ≤ 8.1.3
Vendor states this is fixed in 7.8.13 (unaffected)
Vendor states this is fixed in 8.1.4 (unaffected)

Remediation

No guide yet

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

Patch and advisory references

CVSS

4.3MEDIUMMattermost
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284NVD-CWE-Other

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