CVE-2024-1942 json
Mattermost allows attackers access to posts in channels they are not a member of
published 2024-02-29 2 y ago modified 2026-09-10 1 mo ago also BIT-mattermost-2024-1942 , EUVD-2024-0657 , GHSA-hwjf-4667-gqwx , GO-2024-2592
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
Mattermost versions 8.1.x before 8.1.9, 9.2.x before 9.2.5, and 9.3.0 fail to sanitize the metadata on posts containing permalinks under specific conditions, which allows an authenticated attacker to access the contents of individual posts in channels they are not a member of.
Patch / fix
- go github.com/mattermost/mattermost/server/v8 8.1.9, 9.2.5, 9.3.1
- bitnami mattermost 8.1.9, 9.2.5
- go github.com/mattermost/mattermost-server 9.2.5+incompatible, 9.3.1+incompatible
- Mattermost Mattermost 8.1.9, 9.2.5, 9.3.1, 9.4
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% 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 | >=9.3.0, <9.3.1 >=9.2.0, <9.2.5 <8.1.9 all versions |
9.3.1 9.2.5 8.1.9 |
| bitnami | mattermost | >=8.1.0, <8.1.9 >=9.2.0, <9.2.5 >=9.3.0, <=9.3.0 |
8.1.9 9.2.5 |
| go | github.com/mattermost/mattermost-server | >=9.2.0+incompatible, <9.2.5+incompatible >=9.3.0+incompatible, <9.3.1+incompatible |
9.2.5+incompatible 9.3.1+incompatible |
| 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
- Weakness
-
- CWE-284 Improper Access Control
References
-
mattermost.com
/security-updates
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2024-1942
advisory, web
-
github.com
/mattermost/mattermost
package
-
github.com
/advisories/GHSA-hwjf-4667-gqwx
advisory
Sources
- CVE List CVE-2024-1942
- GitHub Advisory GHSA-hwjf-4667-gqwx
- NVD CVE-2024-1942
- OSV BIT-mattermost-2024-1942
- OSV GO-2024-2592
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