CVE-2025-30516

Sensitive notification disclosure via incomplete logout

Published Apr 14, 2025 · Updated Apr 14, 2025

Insufficient session expiration in Mattermost Mobile Apps 2.25.0 and earlier allows physically proximate attackers to read notifications on shared devices. Mattermost has not disclosed the affected function or why the logout workflow fails to terminate the session when connectivity is poor. Access requires a shared device that continues receiving mobile notifications, and exposure is limited to sensitive notification content.

CVSS severity2.0
Low
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in Mattermost Mobile Apps 2.25.0 and earlier allows physically proximate attackers to read notifications on shared devices. Mattermost has not disclosed the affected function or why the logout workflow fails to terminate the session when connectivity is poor. Access requires a shared device that continues receiving mobile notifications, and exposure is limited to sensitive notification content.

The record

CVE
CVE-2025-30516
Published
Apr 14, 2025
Updated
Apr 14, 2025
Vendor
Mattermost
Product
Mattermost
Classifications
CWE-613
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2025Record 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 <=2.25.0

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Mattermost · Mattermostversion=0 <=2.25.0

Published CVSS scores

2.0Mattermost, Inc.CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-613Insufficient Session Expiration

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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