Is CVE-2026-28741 actively exploited?

No active exploitation of CVE-2026-28741 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28741 be exploited remotely?

Yes. CVE-2026-28741 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28741?

CVE-2026-28741 has a CVSS score of 6.8 (MEDIUM).

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MEDIUM

CVE-2026-28741

CWE-352Published: April 15, 2026· Updated: Apr 17, 2026

6.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.8th

Official Description

Mattermost versions 10.11.x <= 10.11.12, 11.5.x <= 11.5.0, 11.4.x <= 11.4.2, 11.3.x <= 11.3.2 fail to validate CSRF tokens on an authentication endpoint which allows an attacker to update a user's authentication method via a CSRF attack by tricking a user into visiting a malicious page. Mattermost Advisory ID: MMSA-2026-00625

NVD Source

Technical Analysis

CVE-2026-28741 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 6.8.