vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-43754

Permalink previews displayed for posts in archived channels even if users are disallowed to view archived channels

MEDIUM
4.3
CVSS Score
Published: November 27, 2023 at 09:11 AM UTC
Updated: June 17, 2026 at 06:26 AM UTC
1 product affected across 1 vendorMattermost

Using Mattermost by Mattermost?

Get instant alerts when new vulnerabilities affect Mattermost - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.3
Exploit prediction
EPSS 0.5%

Description

Mattermost fails to check whether the  “Allow users to view archived channels”  setting is enabled during permalink previews display, allowing members to view permalink previews of archived channels even if the “Allow users to view archived channels” setting is disabled.

Affected

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

Mattermost· Mattermost
95%
v ≤ 7.8.12v ≤ 8.1.3v ≤ 9.0.1v ≤ 9.1.08.0.0 ≤ v ≤ 8.1.39.0.0 ≤ v ≤ 9.0.19.1.0
Vendor states this is fixed in 7.8.13 (unaffected)
Vendor states this is fixed in 8.1.4 (unaffected)
Vendor states this is fixed in 9.0.2 (unaffected)
Vendor states this is fixed in 9.1.1 (unaffected)

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)

Vendor Advisory
Source: [email protected]
https://mattermost.com/security-updates

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-200NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card