CVE-2025-20621
5 advisories.
Go/github.com/mattermost/mattermost/server/v8 CVE-2025-20621: medium 6.5, EPSS 0.48%
Mattermost webapp crash via a crafted post
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20241127161322-25ff7a3779a5 or later.
go get github.com/mattermost/mattermost/server/v8@v10.2.1go get github.com/mattermost/mattermost/server/v8@v10.1.4go get github.com/mattermost/mattermost/server/v8@v10.0.4go get github.com/mattermost/mattermost/server/v8@v9.11.6go get github.com/mattermost/mattermost/server/v8@v8.0.0-20241127161322-25ff7a3779a5Affected
| introduced | fixed | last affected |
|---|---|---|
| 10.2.0 | 10.2.1 | - |
| 10.1.0 | 10.1.4 | - |
| 10.0.0 | 10.0.4 | - |
| 9.11.0 | 9.11.6 | - |
| 0 | 8.0.0-20241127161322-25ff7a3779a5 | - |
Fixed versions
| 10.2.1 | 10.1.4 | 10.0.4 | 9.11.6 | 8.0.0-20241127161322-25ff7a3779a5 |
Sources
- osv: GHSA-w6xh-c82w-h997
- https://nvd.nist.gov/vuln/detail/CVE-2025-20621
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2025-20621 · published · modified · JSON
Go/github.com/mattermost/mattermost-server CVE-2025-20621: high 7.5, EPSS 0.48%
Mattermost webapp crash via a crafted post in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost-server to 9.11.6+incompatible or later.
go get github.com/mattermost/mattermost-server@v9.11.6+incompatiblego get github.com/mattermost/mattermost-server@v10.0.4+incompatiblego get github.com/mattermost/mattermost-server@v10.1.4+incompatiblego get github.com/mattermost/mattermost-server@v10.2.1+incompatibleAffected
| introduced | fixed | last affected |
|---|---|---|
| 9.11.0+incompatible | 9.11.6+incompatible | - |
| 10.0.0+incompatible | 10.0.4+incompatible | - |
| 10.1.0+incompatible | 10.1.4+incompatible | - |
| 10.2.0+incompatible | 10.2.1+incompatible | - |
Fixed versions
| 9.11.6+incompatible | 10.0.4+incompatible | 10.1.4+incompatible | 10.2.1+incompatible |
Sources
- osv: GO-2025-3407
- nvd: CVE-2025-20621
- https://github.com/advisories/GHSA-w6xh-c82w-h997
- https://mattermost.com/security-updates
CVE-2025-20621 · published · modified · JSON
Go/github.com/mattermost/mattermost-server/v5 CVE-2025-20621: high 7.5, EPSS 0.48%
Mattermost webapp crash via a crafted post in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2025-3407#Go/github.com/mattermost/mattermost-server/v5
- nvd: CVE-2025-20621
- https://github.com/advisories/GHSA-w6xh-c82w-h997
- https://mattermost.com/security-updates
CVE-2025-20621 · published · modified · JSON
Go/github.com/mattermost/mattermost-server/v6 CVE-2025-20621: high 7.5, EPSS 0.48%
Mattermost webapp crash via a crafted post in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2025-3407#Go/github.com/mattermost/mattermost-server/v6
- nvd: CVE-2025-20621
- https://github.com/advisories/GHSA-w6xh-c82w-h997
- https://mattermost.com/security-updates
CVE-2025-20621 · published · modified · JSON
Go/github.com/mattermost/mattermost/server/v8 CVE-2025-20621: high 7.5, EPSS 0.48%
Mattermost webapp crash via a crafted post in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20241127161322-25ff7a3779a5 or later.
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20241127161322-25ff7a3779a5Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 8.0.0-20241127161322-25ff7a3779a5 | - |
Fixed versions
| 8.0.0-20241127161322-25ff7a3779a5 |
Sources
- osv: GO-2025-3407#Go/github.com/mattermost/mattermost/server/v8
- nvd: CVE-2025-20621
- https://github.com/advisories/GHSA-w6xh-c82w-h997
- https://mattermost.com/security-updates
CVE-2025-20621 · published · modified · JSON