CVE-2024-54083Network attack vector

Client denial of service via untyped callProps

Published Dec 16, 2024 · Updated Dec 16, 2024

Improper type validation in affected Mattermost releases allows remote authenticated users to interrupt web and mobile channel clients. A crafted post supplies callProps with an unexpected type, and the Calls client code processes it without first confirming the expected type. Posting access to a particular channel is required; the resulting denial of service is confined to web and mobile clients used by members of that channel.

CVSS severity6.5
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper type validation in affected Mattermost releases allows remote authenticated users to interrupt web and mobile channel clients. A crafted post supplies callProps with an unexpected type, and the Calls client code processes it without first confirming the expected type. Posting access to a particular channel is required; the resulting denial of service is confined to web and mobile clients used by members of that channel.

The record

CVE
CVE-2024-54083
Published
Dec 16, 2024
Updated
Dec 16, 2024
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-1287, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.0 <=10.0.2
  2. Affected versionversion=10.1.0 <=10.1.2
  3. Affected versionversion=9.11.0 <=9.11.4
  4. Affected versionversion=9.5.0 <=9.5.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Mattermost · Mattermostversion=10.0.0 <=10.0.2; version=10.1.0 <=10.1.2; version=9.11.0 <=9.11.4; version=9.5.0 <=9.5.12

Published CVSS scores

6.5Mattermost, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1287Improper Validation of Specified Type of Input
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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