{"id":"CVE-2026-76406","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-76406","generatedAt":"2026-10-28T01:19:46.702Z","title":"In Splunk SOAR versions below 8.7.0, an unauthenticated user with access to encrypted credential data from an affected Splunk SOAR instance could submit Basic authentication data to the Representational State Transfer (REST) API to expose and decrypt…","description":"In Splunk SOAR versions below 8.7.0, an unauthenticated user with access to encrypted credential data from an affected Splunk SOAR instance could submit Basic authentication data to the Representational State Transfer (REST) API to expose and decrypt that encrypted credential data.\nThe vulnerability is possible because Splunk SOAR decrypts encrypted Basic authentication values before completing authentication checks.\nThe attack requires the unauthenticated user to have encrypted credential data from an affected Splunk SOAR instance. The unauthenticated user should not be able to exploit the vulnerability at will.\nFor more information see Using the REST API reference for Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/rest-api-reference/8.5.0/using-the-splunk-soar-rest-api/using-the-rest-api-reference-for-splunk-soar-on-premises) in the Splunk documentation.","published":"2026-10-21T23:17:29.000Z","lastModified":"2026-10-22T16:57:10.000Z","status":"Awaiting Analysis","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-203"],"affected":[],"epss":{"score":0.00321,"percentile":0.24943,"date":"2026-10-26","history":[{"date":"2026-10-22","score":0.00321,"percentile":0.23929}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.32%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-21T23:17:29.000Z","detail":{"score":"5.9","severity":"MEDIUM","publishedAt":"2026-10-21T23:17:29.180Z"},"summary":"New CVE, medium severity (CVSS 5.9)."}],"references":[{"url":"https://advisory.splunk.com/advisories/SVD-2026-1010","source":"psirt@cisco.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-76406","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."}