Vulnerability · Published Aug 22, 2024 · Assigned by Mattermost
CVE-2024-39836Munged email address used for password resets and notifications
Medium 4.8
In plain English
A medium-severity security flaw in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to ensure that remote/synthetic users cannot create sessions or reset passwords, which allows the munged email addresses, created by shared channels, to be used to receive email notifications and to reset passwords, when they are valid, functional emails.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 9.10.1+incompatible, 9.5.8+incompatible, 9.8.3+incompatible, 9.9.2+incompatible | GO-2024-3096 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2024-3096 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2024-3096 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.8.3 | GHSA-c6vp-jjgv-38wj |
| Go | github.com/mattermost/mattermost/server/v8 | 9.9.2 | GHSA-c6vp-jjgv-38wj |
| Go | github.com/mattermost/mattermost/server/v8 | no fix listed | GO-2024-3096 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.5.8 | GHSA-c6vp-jjgv-38wj |
| Go | github.com/mattermost/mattermost/server/v8 | 9.10.1 | GHSA-c6vp-jjgv-38wj |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 9.9.0 – through 9.9.19.5.0 – through 9.5.79.10.09.8.0 – through 9.8.2 |
Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N