Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost | unaffected |
|
No data.
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Project Subscriptions
No data.
No advisories yet.
Solution
Update Mattermost to versions 11.11.0, 11.10.1, 11.7.10, 11.9.2, 11.8.6 or higher.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Fri, 16 Oct 2026 07:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to validate user’s permissions before other validations which allows non-content reviewers to infer a post’s flagged status via direct API call.. Mattermost Advisory ID: MMSA-2026-00754 | |
| Title | Improper order of authorisations in Mattermost GetFile API leads to an authenticated user to determine a post’s quarantined status | |
| Weaknesses | CWE-203 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-10-16T07:10:12.870Z
Reserved: 2026-08-01T16:25:43.758Z
Link: CVE-2026-18560
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-16T08:17:12.967
Modified: 2026-10-16T08:17:12.967
Link: CVE-2026-18560
Redhat
No data.
OpenCVE Enrichment
No data.