CVE-2023-4105
Mattermost vulnerability analysis and mitigation

Overview

Mattermost fails to delete the attachments when deleting a message in a thread allowing a simple user to still be able to access and download the attachment of a deleted message. This vulnerability, identified as CVE-2023-4105, affects Mattermost versions from 7.8.0 to 7.8.8, 7.9.0 to 7.9.6, and 7.10.0 to 7.10.4 (NVD).

Technical details

The vulnerability has been classified with CWE-862 (Missing Authorization) and received a CVSS v3.1 base score of 4.3 (MEDIUM) from NIST with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. Mattermost, Inc. assessed it with a lower CVSS score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N (NVD).

Impact

The vulnerability allows unauthorized access to attachments from deleted messages in threads, potentially exposing sensitive information that was intended to be removed from the system (CVE).

Mitigation and workarounds

Users should upgrade to the fixed versions: 7.8.8 or later for the 7.8.x series, 7.9.6 or later for the 7.9.x series, and 7.10.4 or later for the 7.10.x series (NVD).

Additional resources


SourceThis report was generated using AI

Related Mattermost vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-4981CRITICAL9.9
  • MattermostMattermost
  • cpe:2.3:a:mattermost:mattermost
NoYesJun 20, 2025
CVE-2024-8071HIGH7.2
  • MattermostMattermost
  • github.com/mattermost/mattermost
NoYesAug 22, 2024
CVE-2024-42411MEDIUM5.3
  • MattermostMattermost
  • mattermost
NoYesAug 22, 2024
CVE-2024-43813MEDIUM4.3
  • MattermostMattermost
  • mattermost
NoYesAug 22, 2024
CVE-2024-10214LOW3.5
  • MattermostMattermost
  • github.com/mattermost/mattermost
NoYesOct 28, 2024

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management