CVE-2023-45223 json
Users full name disclosure through Mattermost Boards with Show Full Name Option disabled
published 2023-11-27 2 y ago modified 2026-09-10 1 mo ago also GHSA-p5pr-vm3j-jxxf , EUVD-2023-3003
- 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 43%
- public exploits
- 0
- none known
Summary
Mattermost fails to properly validate the "Show Full Name" option in a few endpoints in Mattermost Boards, allowing a member to get the full name of another user even if the Show Full Name option was disabled.
Patch / fix
- go github.com/mattermost/mattermost/server/v8 8.1.4
- go github.com/mattermost/mattermost-server/v6 7.8.13
- Mattermost Mattermost 7.8.13, 8.1.4
Exploit prediction
0.51% chance of exploitation in the next 30 days, higher than 43% 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 |
| NVD | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | <8.1.4 |
8.1.4 |
| go | github.com/mattermost/mattermost-server/v6 | <7.8.13 |
7.8.13 |
Affected products
- Mattermost Mattermost
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-45223
advisory
-
github.com
/mattermost/mattermost
package
Sources
- CVE List CVE-2023-45223
- GitHub Advisory GHSA-p5pr-vm3j-jxxf
- NVD CVE-2023-45223
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