CVE-2026-6517
- Source
- https://cve.org/CVERecord?id=CVE-2026-6517
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6517.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-6517
- Published
- 2026-06-15T13:55:25.742Z
- Modified
- 2026-07-15T01:49:13.989115591Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
- Summary
- Mattermost Desktop App fails to restrict the allow list of domains which NTLM credentials are passed
- Details
-
Mattermost Desktop App versions <=6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that routes to an external web server. Mattermost Advisory ID: MMSA-2026-00651
- Database specific
{ "cwe_ids": [ "CWE-522" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6517.json", "unresolved_ranges": [ { "extracted_events": [ { "last_affected": "5.5.13" } ], "source": "AFFECTED_FIELD" } ], "cna_assigner": "Mattermost" }- References
Affected packages
Git / github.com/mattermost/desktop
Affected ranges
- Type
- GIT
- Repo
- https://github.com/mattermost/desktop
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast affected
- Database specific
{ "cpe": "cpe:2.3:a:mattermost:mattermost_desktop:*:-:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "last_affected": "5.13.0" } ], "source": "CPE_RANGE" }