Medium severity6.1NVD Advisory· Published Jun 19, 2020· Updated Jun 17, 2026
CVE-2017-18904
CVE-2017-18904
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost-serverGo | < 3.9.2 | 3.9.2 |
github.com/mattermost/mattermost-serverGo | >= 3.10.0, < 3.10.2 | 3.10.2 |
Affected products
5- Mattermost/Serverdescription
- ghsa-coords3 versionspkg:golang/github.com/mattermost/mattermost-serverpkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 3.9.2+ 2 more
- (no CPE)range: < 3.9.2
- (no CPE)range: < 0.0.20260114T191543-150000.1.137.1
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-8pff-p3gx-w4jfghsaADVISORY
- mattermost.com/security-updates/nvdVendor Advisory
- nvd.nist.gov/vuln/detail/CVE-2017-18904ghsaADVISORY
- github.com/mattermost/mattermost/commit/6a2754376c8c8270be5e11e3fdab589659d0cc8dghsaWEB
- github.com/mattermost/mattermost/commit/bde06a7bc3a03a56da224c1ffcd8bffb0af8071bghsaWEB
- github.com/mattermost/mattermost/commit/f06c5bef4d78966c60b153bbec6eea4ec0be9e68ghsaWEB
- mattermost.com/security-updatesghsaWEB
News mentions
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