CVE-2024-3872Network attack vector

Client freeze or crash via deeplink regex

Published Apr 16, 2024 · Updated Aug 1, 2024

Regular-expression DoS in Mattermost Mobile 2.13.0 and earlier allows remote attackers to freeze or crash the app via a crafted deeplink. The deeplink parser evaluates an attacker-controlled link with a polynomial-complexity regular expression, causing excessive processing as input grows. The recipient must open the link; successful exploitation interrupts only the mobile client by freezing it or terminating the app.

CVSS severity3.1
Low
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Regular-expression DoS in Mattermost Mobile 2.13.0 and earlier allows remote attackers to freeze or crash the app via a crafted deeplink. The deeplink parser evaluates an attacker-controlled link with a polynomial-complexity regular expression, causing excessive processing as input grows. The recipient must open the link; successful exploitation interrupts only the mobile client by freezing it or terminating the app.

The record

CVE
CVE-2024-3872
Published
Apr 16, 2024
Updated
Aug 1, 2024
Vendor
Mattermost
Product
Mattermost Mobile
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=0 <=2.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mattermost · Mattermost Mobileversion=0 <=2.13.0
Mattermost · Mattermostversion=0 <=2.13.0

Published CVSS scores

3.1Mattermost, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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