{"id":"CVE-2023-5876","summary":"Regex DoS from a malicious server enrolled in Desktop","details":"Mattermost fails to properly validate a RegExp built off the server URL path, allowing an attacker in control of an enrolled server to mount a Denial Of Service.\n\n","modified":"2026-08-12T03:51:38.455403646Z","published":"2023-11-02T08:26:01.611Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"last_affected":"5.5.0"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"Mattermost","cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5876.json"},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5876.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5876"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/desktop","events":[{"introduced":"0"},{"fixed":"db8645b21b86fe368938d53b202c1014a929ab45"}],"database_specific":{"cpe":"cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"5.5.1"}],"source":"CPE_RANGE"}}],"versions":["v5.5.1-rc.4","v5.5.1-rc.3","v5.5.1-rc.2","v5.5.0","v5.5.0-mas.1","v5.5.0-rc.2","v5.5.0-rc.1","v4.7.0-beta2","beta2","4.7.0-beta","v1.3.0-rc2","v1.3.0","v1.3.0-rc1","v1.2.0","v1.1.1","v1.1.0","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.5.1","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-5876.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"}]}