CVE-2016-11071: mattermost mattermost_server Cross-site Scripting
CVSS: 6.1v3.1MediumModified
AliasesGHSA-h3qg-w9j5-wh3mGO-2025-4058
Published 19-06-2020Last modified 06-08-2024
Vulnerability summary
CVE-2016-11071 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in mattermost mattermost_server. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 51.9% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.1 (NVD)EPSS score
0.69%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 19-06-2020PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Mattermost Server before 3.1.0. It allows XSS because the noreferrer and noopener protection mechanisms were not in place.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- OSV · GoEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
0.69%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
0.00 pp
From 0.69% on 20-09-2026
20-09-202620-10-2026
EPSS score0.69%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Github.com/mattermost1 product
- mattermost-server< 3.1.0 | < 3.1.0+incompatible
Mattermost1 product
- mattermost_server< 3.1.0
2 vendors · 2 products
