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
Details
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| github.com/mattermost/mattermost-server | โ | โ |
| github.com/mattermost/mattermost-server/v5 | โ | โ |
| github.com/mattermost/mattermost-server/v6 | โ | โ |
| github.com/mattermost/mattermost/server/v8 | โ | โ |
| mattermost-server | 11.3.0 | 11.3.1 |
References
Similar Threats
- Unknown CVE-2016-11063
- High CVE-2016-11066
- Unknown CVE-2016-11067
- Unknown CVE-2016-11068
- High CVE-2016-11069
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