Secuno
ENNL
Book demo

CVE-2025-25279

Mattermost Server path traversal

9.9 CRITICALEPSS 24.2%
  1. Published24 Feb 2025

Description

Mattermost versions 10.4.x <= 10.4.1, 9.11.x <= 9.11.7, 10.3.x <= 10.3.2, 10.2.x <= 10.2.2 fail to properly validate board blocks when importing boards which allows an attacker could read any arbitrary file on the system via importing and exporting a specially crafted import archive in Boards.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Mattermost Server≥ 10.2.0 < 10.2.3 · ≥ 10.3.0 < 10.3.3 · ≥ 10.4.0 < 10.4.2 · ≥ 9.11.0 < 9.11.8

Remediation

Fixed in
Mattermost Server≥ 10.2.3

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-821109.6
IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker…
CVE-2026-821019.6
IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker…
CVE-2026-196278.2
IBM Planning Analytics 2.0, and 2.1 could allow a remote attacker to read arbitrary…
CVE-2026-1026278.8
IBM TRIRIGA Application Platform 5.0.0 through 5.0.8 could allow a remote authenticated…
CVE-2026-599768.1
ConvertX is a self-hosted file conversion service. Prior to 0.18.0, the ImageMagick…
CVE-2026-859538.5
Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7…

Frequently asked

Is CVE-2025-25279 being actively exploited?

CVE-2025-25279 is not in the CISA KEV catalog. Its EPSS exploit probability is 24.2%.

How severe is CVE-2025-25279?

CVE-2025-25279 has a CVSS 3.1 base score of 9.9, rated critical. EPSS estimates a 24.2% probability of exploitation.

Which products are affected by CVE-2025-25279?

Affected products include Mattermost Server.

How do I fix CVE-2025-25279?

Upgrade affected software to a fixed version, for example Mattermost Server 10.2.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-25279 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.