Description
Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to check if a file has been deleted when creating a bookmark which allows an attacker who knows the IDs of deleted files to obtain metadata of the files via bookmark creation.
References (1)
Core 1
Core References
Vendor Advisory
https://mattermost.com/security-updates
Scores
CVSS v3
3.1
EPSS
0.0009
EPSS Percentile
26.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-863
Status
published
Products (2)
mattermost/mattermost
10.5.0 - 10.5.2Go
mattermost/mattermost_server
9.11.0 - 9.11.10
Published
Apr 14, 2025
Tracked Since
Feb 18, 2026