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CVE-2026-3472

—
CVSS 3.1
3.5 low
EPSS
<1%p19
Published
()
Modified
Description

Mattermost versions 10.11.x <= 10.11.18, 11.6.x <= 11.6.3, 11.5.x <= 11.5.6 fail to properly apply markdown image rendering restrictions to AI bot tool result posts, which allows an authenticated attacker to exfiltrate data to an attacker-controlled server via injecting markdown image syntax into tool result content rendered by a victim's client.. Mattermost Advisory ID: MMSA-2026-00619

Vendors
mattermost
Products
mattermost server
Weakness
CWE-693
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

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