No advisories yet.
Solution
Update Mattermost to versions 11.6.0, 11.5.2, 10.11.14 or higher.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Mon, 18 May 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 18 May 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
|
| Vendors & Products |
Mattermost
Mattermost mattermost |
Mon, 18 May 2026 08:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to escape some variables that could contain malicious content during error page composition which allows an attacker with access to edit some site configuration to execute some malicious code via injecting some JS as part of those values.. Mattermost Advisory ID: MMSA-2026-00622 | |
| Title | Unescaped variables during error page composition | |
| Weaknesses | CWE-79 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-05-18T14:33:30.914Z
Reserved: 2026-03-03T17:33:56.666Z
Link: CVE-2026-3495
Updated: 2026-05-18T14:33:26.384Z
Status : Undergoing Analysis
Published: 2026-05-18T08:16:13.900
Modified: 2026-05-18T17:32:38.127
Link: CVE-2026-3495
No data.
OpenCVE Enrichment
Updated: 2026-05-18T10:00:12Z