CVE-2023-1774 json
Unauthorized email invite to a private channel
published 2023-03-31 3 y ago modified 2026-06-17 4 mo ago also BIT-mattermost-2023-1774 , EUVD-2023-0969 , GHSA-9hj7-v56g-rhf6
- cvss
- 4.2
- 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
When processing an email invite to a private channel on a team, Mattermost fails to validate the inviter's permission to that channel, allowing an attacker to invite themselves to a private channel.
Patch / fix
- go github.com/mattermost/mattermost-server 7.1.6, 7.7.2
- go github.com/mattermost/mattermost-server/v5 7.1.6
- go github.com/mattermost/mattermost-server/v6 7.1.6
- bitnami mattermost 7.1.6
- Mattermost Mattermost 7.1.6, 7.7.2, 7.8.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.32% 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 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| OSV | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-server | >=3.3.0, <7.1.6 >=7.7.0, <7.7.2 >=7.1.0, <7.1.6 |
7.1.6 7.7.2 |
| go | github.com/mattermost/mattermost-server/v5 | >=5.0.0, <7.1.6 |
7.1.6 |
| go | github.com/mattermost/mattermost-server/v6 | >=6.0.0, <7.1.6 |
7.1.6 |
| bitnami | mattermost | <7.1.6 >=7.7.1, <=7.7.1 |
7.1.6 |
Affected products
- Mattermost Mattermost
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
mattermost.com
/security-updates/
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2023-1774
advisory, web
-
mattermost.com
/security-updates
web
Sources
- CVE List CVE-2023-1774
- GitHub Advisory GHSA-9hj7-v56g-rhf6
- NVD CVE-2023-1774
- OSV BIT-mattermost-2023-1774
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