CVE-2024-21848 json
Users maintain access to active call after being removed from a channel
published 2024-04-05 2 y ago modified 2026-09-10 1 mo ago also BIT-mattermost-2024-21848 , EUVD-2024-1339 , GHSA-xp9j-8p68-9q93 , GO-2024-2707
- cvss
- 3.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel
Patch / fix
- go github.com/mattermost/mattermost/server/v8 8.1.11
- bitnami mattermost 8.1.11
- Mattermost Mattermost 8.1.11, 9.5.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | <8.1.11 all versions |
8.1.11 |
| bitnami | mattermost | >=8.1.0, <8.1.11 |
8.1.11 |
| go | github.com/mattermost/mattermost-server | all versions |
no fix listed |
| go | github.com/mattermost/mattermost-server/v5 | all versions |
no fix listed |
| go | github.com/mattermost/mattermost-server/v6 | all versions |
no fix listed |
Affected products
- Mattermost Mattermost
Classification
References
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2024-21848
advisory, web
-
github.com
/mattermost/mattermost
package
-
github.com
/advisories/GHSA-xp9j-8p68-9q93
advisory
Sources
- CVE List CVE-2024-21848
- GitHub Advisory GHSA-xp9j-8p68-9q93
- NVD CVE-2024-21848
- OSV BIT-mattermost-2024-21848
- OSV GO-2024-2707
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