VYPR
← All advisories
Low severity3.5NVD Advisory· Published Jun 26, 2026· Updated Jun 29, 2026

CVE-2026-3472

CVE-2026-3472

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

Affected products

2
  • Mattermost/Mattermost2 versions
    cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*range: >=10.11.0,<10.11.19
    • (no CPE)range: <=10.11.18, <=11.6.3, <=11.5.6

Patches

Vulnerability mechanics

References

1

News mentions

0

No linked articles in our index yet.