---
id: CVE-2024-1952
aliases:
  - GHSA-r4fm-g65h-cr54
  - BIT-mattermost-2024-1952
  - GO-2024-2635
title: Mattermost incorrectly allows access individual posts
summary: Mattermost incorrectly allows access individual posts
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'
vendor: mattermost
product: github.com/mattermost/mattermost/server/v8
ecosystem: go
affected:
  - 'github.com/mattermost/mattermost/server/v8 >= 9.0.0, < 9.4.0'
patched:
  - github.com/mattermost/mattermost/server/v8 9.4.0
published: '2024-02-29'
updated: '2026-08-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-r4fm-g65h-cr54'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-1952'
  - url: 'https://github.com/advisories/GHSA-r4fm-g65h-cr54'
  - url: 'https://github.com/mattermost/mattermost'
  - url: 'https://mattermost.com/security-updates'
tags:
  - osv
  - go
epss: 0.00367
epssPercentile: 0.30561
ingestedAt: '2026-08-07T19:14:17.601Z'
---

## Overview

Mattermost version 8.1.x before 8.1.9 fails to sanitize data associated with permalinks when a plugin updates an ephemeral post, allowing an authenticated attacker who can control the ephemeral post update to access individual posts' contents in channels they are not a member of.



## Affected packages

- `github.com/mattermost/mattermost/server/v8 >= 9.0.0, < 9.4.0`

## Remediation

Upgrade to a patched release:

- `github.com/mattermost/mattermost/server/v8 9.4.0`