CVE-2016-11070 json
Mattermost Server is vulnerable to XSS through customizable theme color-code values
published 2020-06-19 6 y ago modified 2026-06-17 4 mo ago also GHSA-h8qw-xqm9-q66j , GO-2025-4050 , EUVD-2016-2059
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
An issue was discovered in Mattermost Server before 3.1.0. It allows XSS via theme color-code values.
Patch / fix
- go github.com/mattermost/mattermost-server 3.1.0, 3.1.0+incompatible
- mattermost mattermost_server 3.1.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20251105T184115-1.1
opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2025:15710-1
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-server | <3.1.0 <3.1.0+incompatible |
3.1.0 3.1.0+incompatible |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/mattermost/mattermost/commit/c5deb333db40e4e527f98edb93b41d1b66cfec5f
web
-
mattermost.com
/security-updates/
vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2016-11070
advisory
-
github.com
/mattermost/mattermost
package
-
mattermost.com
/security-updates
web
-
github.com
/advisories/GHSA-h8qw-xqm9-q66j
advisory
Sources
- CVE List CVE-2016-11070
- GitHub Advisory GHSA-h8qw-xqm9-q66j
- NVD CVE-2016-11070
- OSV GO-2025-4050
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.