Project Subscriptions
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No advisories yet.
Solution
Update Mattermost to versions 11.4.0, 11.3.1, 11.2.3, 10.11.11 or higher.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
Mon, 16 Mar 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 16 Mar 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to canonicalize IPv4-mapped IPv6 addresses before reserved IP validation which allows an attacker to perform SSRF attacks against internal services via IPv4-mapped IPv6 literals (e.g., [::ffff:127.0.0.1]).. Mattermost Advisory ID: MMSA-2026-00585 | |
| Title | SSRF bypass via IPv4-mapped IPv6 literals | |
| Weaknesses | CWE-918 | |
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2026-03-16T18:38:07.619Z
Reserved: 2026-02-13T10:45:36.473Z
Link: CVE-2026-2455
Updated: 2026-03-16T18:38:00.408Z
Status : Received
Published: 2026-03-16T15:16:22.277
Modified: 2026-03-16T15:16:22.277
Link: CVE-2026-2455
No data.
OpenCVE Enrichment
No data.