{"id":"CVE-2026-78357","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-78357","generatedAt":"2026-10-28T06:35:18.520Z","title":"An attacker who has previously obtained a valid authentication token can therefore continue to access OTRS with the privileges of the affected agent or customer user even after the corresponding account has been deactivated or the user's password has…","description":"Previously issued authentication tokens are not immediately invalidated when an OTRS agent or customer user account is deactivated or its password is changed. As a result, an existing JWT may remain valid until its regular expiration time, which can be approximately 16 hours.\n\nAn attacker who has previously obtained a valid authentication token can therefore continue to access OTRS with the privileges of the affected agent or customer user even after the corresponding account has been deactivated or the user's password has been changed.\n\nThe vulnerability does not allow an attacker to obtain authentication tokens by itself. Exploitation requires possession of a previously issued and still valid token. The actual impact depends on the privileges associated with the compromised token. Customer user tokens are limited to the permissions of the affected customer account, while agent tokens may provide access to broader ticket, customer, or administrative functionality depending on the assigned permissions.\n\nThis issue affects OTRS:\n\n  *  7.0.X\n  *  8.0.X\n  *  2023.X\n  *  2024.X\n  *  2025.X\n  *  2026.X before 2026.7.X","published":"2026-10-12T07:16:37.000Z","lastModified":"2026-10-15T20:38:44.000Z","status":"Deferred","sourceIdentifier":"security@otrs.com","cvss":{"version":"3.1","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-613"],"affected":[],"epss":{"score":0.00305,"percentile":0.23098,"date":"2026-10-27","history":[{"date":"2026-10-12","score":0.00304,"percentile":0.21413}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-12T07:16:37.000Z","detail":{"score":"9.1","severity":"CRITICAL","publishedAt":"2026-10-12T07:16:37.073Z"},"summary":"New CVE, critical severity (CVSS 9.1)."}],"references":[{"url":"https://otrs.com/release-notes/otrs-security-advisory-2026-14/","source":"security@otrs.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-78357","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}