ZeroHour
DashboardNewsCVEsExploitsIncidentsAIBriefAnalyticsEntitiesWatchlistIOCsAsk the feedSourcesFeeds & APIKiosk mode

CVE-2026-6334

—
CVSS 3.1
3.8 low
EPSS
<1%p2
Published
()
Modified
Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to enforce client identity binding during the OAuth authorization code redemption flow which allows an authenticated OAuth client to redeem authorization codes issued to a different client via a crafted token exchange request.. Mattermost Advisory ID: MMSA-2026-00570

Vendors
mattermost
Products
mattermost server
Weakness
CWE-305
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
NVD CVE.org GitHub PoCs EPSS (0.1%)

In the news

No ingested article mentions this CVE yet.