CVE-2024-41926
Mattermost allows remote actor to set arbitrary RemoteId values for synced users in github.com/mattermost/mattermost-server
2.7
LOW
CVSS 3.1
EPSS 0.16%
Description
Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.
How to fix CVE-2024-41926
To remediate CVE-2024-41926, upgrade the affected package to a fixed version below.
- —upgrade to 9.5.7 or later
- —upgrade to 5.3.2-0.20240604093018-5114c3b7cdb8 or later
- —upgrade to 9.5.7+incompatible or later
- —no fix listed
- —no fix listed
- —no fix listed
- —upgrade to 9.5.7 or later
Is CVE-2024-41926 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- >= 9.5.0, < 9.5.7 | >= 9.9.0, <= 9.9.0
- from 0, < 5.3.2-0.20240604093018-5114c3b7cdb8
- >= 9.5.0+incompatible, < 9.5.7+incompatible, >= 9.9.0+incompatible, < 9.9.1+incompatible
- from 0
- from 0
- from 0
- >= 9.5.0, < 9.5.7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N |
| osv | CVSS 3.1 | LOW2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N |