CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

Multiple vulnerabilities in Mattermost products (August 14, 2026)

unknown
Multiple vulnerabilities have been discovered in Mattermost products. They allow an attacker to cause an unspecified security issue by the editor.

CSIRTS triage

vendor: Mattermostproduct: Mattermost productsOther
What
Multiple unspecified security vulnerabilities have been discovered in Mattermost products.
Who is affected
All Mattermost deployments running affected versions.
Urgency
Medium; insufficient detail on impact, but multiple vulnerabilities suggest timely remediation is needed.
Action
Consult Mattermost security advisories to determine affected versions and apply available patches.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Mattermost products

Get an email when a new Mattermost products advisory drops — max one per day, one-click unsubscribe.

Details

Source
CERT-FR Avis de sécurité (FR · national-cert · site)
Severity
unknown
Published
2026-08-14
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-1019/

Recent advisories for Mattermost products

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-FR Avis de sécurité