{"id":"CVE-2024-36257","aliases":["EUVD-2024-36003","GHSA-5cg2-wmx6-ccqv"],"status":"published","title":"Lack of permission check when updating the profile picture of a remote user (shared channels enabled)","description":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.","severity":{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00303,"percentile":0.23345,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2024-07-03T08:29:10Z","modified":"2026-10-28T02:30:58Z","products":[{"vendor":"mattermost","product":"mattermost"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36257","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5cg2-wmx6-ccqv"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36257.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-36257","title":"Lack of permission check when updating the profile picture of a remote user (shared channels enabled)","description":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.","status":"published","published":"2024-07-03T08:29:10.457Z","modified":"2024-08-02T03:37:03.658Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:34:14.985673Z"}],"euvd":[{"id":"EUVD-2024-36003","description":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.","status":"published","published":"2024-07-03T08:29:10Z","modified":"2024-08-02T03:37:03Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T03:50:20.360548Z"}],"ghsa":[{"id":"GHSA-5cg2-wmx6-ccqv","title":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote...","description":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.","status":"published","published":"2024-07-03T18:48:08Z","modified":"2024-07-03T18:48:09Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:57:38.140316Z"}],"nvd":[{"id":"CVE-2024-36257","description":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.","status":"published","published":"2024-07-03T09:15:06.247Z","modified":"2026-06-17T07:36:23.22Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:10:10.545705Z"}],"osv":[{"id":"CVE-2024-36257","title":"Lack of permission check when updating the profile picture of a remote user (shared channels enabled)","description":"Mattermost versions 9.5.x \u003c= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.","status":"published","published":"2024-07-03T08:29:10.457Z","modified":"2026-10-28T02:30:58.709268562Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:44:40.704083Z"}]}}