CVE-2024-47003

DoS via non-string message using permalink embed

MEDIUM

6.5

CVSS Score

Published: September 26, 2024 at 08:05 AM UTC

Updated: June 17, 2026 at 07:56 AM UTC

2 products affected across 1 vendorMattermost ServerMattermost

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 Free Sign In

Severity

MEDIUM6.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

Mattermost versions 9.11.x <= 9.11.0 and 9.5.x <= 9.5.8 fail to validate that the message of the permalink post is a string, which allows an attacker to send a non-string value as the message of a permalink post and crash the frontend.

Affected

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

Mattermost Server · Mattermost

95%

9.5.0 ≤ v < 9.5.99.11.0 9.11.0 rc1 9.11.0 rc2 9.11.0 rc3

Affected range stops below 9.5.9, so it looks safe — our inference, not a vendor statement

Mattermost · Mattermost

60%

9.5.0 ≤ v ≤ 9.5.89.11.0 9.5.0

Vendor states this is fixed in 10.0.0 (unaffected)

Vendor states this is fixed in 9.11.1 (unaffected)

Vendor states this is fixed in 9.5.9 (unaffected)

Remediation

No guide yet

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

Patch and advisory references

https://mattermost.com/security-updates

References (1)

Vendor Advisory

Source: [email protected]

https://mattermost.com/security-updates

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-400NVD-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 account Sign in

Free plan, no card