GO-2026-5067

vendorUSosv

Mattermost allows attackers to manipulate administrator terminals via crafted messages containing ANSI and OSC escape sequences in github.com/mattermost/mattermost-server

view advisory published 2026-06-25Licence: per source

Mattermost allows attackers to manipulate administrator terminals via crafted messages containing ANSI and OSC escape sequences in github.com/mattermost/mattermost-server

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-3108US	high8.8	0.28% (21st)	—	2026-03-26
Mattermost versions 11.2.x <= 11.2.2, 10.11.x <= 10.11.10, 11.4.x <= 11.4.0, 11.3.x <= 11.3.1 fail to sanitize user-controlled post content in the mmctl commands terminal output wh…

references

External citations — patches, advisories, analysis.

https://github.com/advisories/GHSA-3439-vqgj-2gcfADVISORY
https://mattermost.com/security-updatesWEB
https://nvd.nist.gov/vuln/detail/CVE-2026-3108ADVISORY

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan