Description
Mattermost versions 10.11.x <= 10.11.4 fail to validate redirect URLs on the /error page, which allows an attacker to redirect a victim to a malicious site via a crafted link opened in a new tab.
References (1)
Scores
CVSS v3
3.1
EPSS
0.0005
EPSS Percentile
15.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-601
Status
published
Products (3)
mattermost/mattermost
10.11.0-rc1 - 10.11.5-0.20251016131338-dad6bd7a1509Go
mattermost/mattermost
8.0.0-20250721062209-4952acea88ce - 8.0.0-20251016131338-dad6bd7a1509Go
mattermost/mattermost_server
10.11.0 - 10.11.5
Published
Dec 17, 2025
Tracked Since
Feb 18, 2026