CVE-2023-48732 json
Keywords that trigger mentions are leaked to other users
published 2024-01-02 2 y ago modified 2026-09-10 1 mo ago also BIT-mattermost-2023-48732 , EUVD-2024-0399 , GHSA-q7rx-w656-fwmv , GO-2024-2448
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.
Patch / fix
- go github.com/mattermost/mattermost/server/v8 8.1.7
- go github.com/mattermost/mattermost-server/v6 8.1.7
- bitnami mattermost 8.1.7
- go github.com/mattermost/mattermost-server 8.1.7+incompatible
- Mattermost Mattermost 8.1.7
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/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 | <8.1.7 all versions |
8.1.7 |
| go | github.com/mattermost/mattermost-server/v6 | <8.1.7 all versions |
8.1.7 |
| bitnami | mattermost | <8.1.7 |
8.1.7 |
| go | github.com/mattermost/mattermost-server | <8.1.7+incompatible |
8.1.7+incompatible |
| go | github.com/mattermost/mattermost-server/v5 | all versions |
no fix listed |
Affected products
- Mattermost Mattermost
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
github.com
/mattermost/mattermost/commit/851515be222160bee0a495c0d411056b19ed4111
web
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-48732
advisory, web
-
github.com
/advisories/GHSA-q7rx-w656-fwmv
advisory
-
github.com
/mattermost/mattermost
package
Sources
- CVE List CVE-2023-48732
- GitHub Advisory GHSA-q7rx-w656-fwmv
- NVD CVE-2023-48732
- OSV BIT-mattermost-2023-48732
- OSV GO-2024-2448
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.