CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVE-2017-18904
An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. It allows XSS via an uploaded file.
Severity
- EPSS
- 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8pff-p3gx-w4jf | Go | github.com/mattermost/mattermost-server | <3.9.2 | 3.9.2 |
| GHSA-8pff-p3gx-w4jf | Go | github.com/mattermost/mattermost-server | >=3.10.0 <3.10.2 | 3.10.2 |
| GO-2026-4302 | Go | github.com/mattermost/mattermost-server | <3.9.2+incompatible >=3.10.0+incompatible <3.10.2+incompatible | 3.9.2+incompatible, 3.10.2+incompatible |