{"id":"CVE-2026-76298","kind":"vulnerability","aliases":["CVE-2026-76298"],"related":[],"title":"Splunk Enterprise: non-admin users can run OS commands via database password","description":"In Splunk Enterprise versions below 10.4.4 and 10.2.8, a user who does not hold the \"admin\" or \"power\" Splunk roles could derive the PostgreSQL sidecar database superuser password and run arbitrary operating system commands as the user account running Splunk Enterprise on search head cluster members.\nThe vulnerability is possible because the PostgreSQL sidecar service derives a privileged database password from the search head cluster identifier that appears in search job logs.\nFor more information see About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access), server.conf (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/configuration-file-reference/10.2.0-configuration-file-reference/server.conf), and Sidecar configuration settings (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/splunk-sidecars/sidecar-configuration-settings) in the Splunk documentation.","summary":"A user without the admin or power Splunk roles can derive the PostgreSQL sidecar database superuser password from the search head cluster identifier shown in search job logs. That password lets them run arbitrary operating system commands as the account running Splunk Enterprise on search head cluster members.","severity":"high","cvss":8.8,"epss":0.00256,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["runtime","search-head-cluster","self-hosted","splunk-enterprise"],"not_affected_if":["no-search-head-cluster"],"how_to_check":"Compare the installed Splunk Enterprise version with 10.4.4 and 10.2.8; versions below these are affected. Only search head cluster members are described as at risk.","fix":"Upgrade Splunk Enterprise to 10.4.4 or 10.2.8 or later.","status":"open","published_at":"2026-10-21T23:17:27+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","triaged_at":"2026-10-23T22:32:48+00:00","updated_at":"2026-10-24T13:15:54+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T22:32:48Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade Splunk Enterprise to 10.4.4 or 10.2.8 or later.","reach":"network","title":"Splunk Enterprise: non-admin users can run OS commands via database password","impact":"high","summary":"A user without the admin or power Splunk roles can derive the PostgreSQL sidecar database superuser password from the search head cluster identifier shown in search job logs. That password lets them run arbitrary operating system commands as the account running Splunk Enterprise on search head cluster members.","category":"runtime","who_cares":["splunk-enterprise","search-head-cluster","self-hosted"],"confidence":0.8,"needs_auth":"yes","worst_case":"Arbitrary OS commands as the Splunk service user on cluster members.","analyst_note":"","how_to_check":"Compare the installed Splunk Enterprise version with 10.4.4 and 10.2.8; versions below these are affected. Only search head cluster members are described as at risk.","needs_analyst":false,"not_affected_if":["no-search-head-cluster"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.001119,"input_tokens":3232,"output_tokens":1591,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-76298':16A,19A '/en/splunk-enterprise/administer/admin-manual/10.2/configuration-file-reference/10.2.0-configuration-file-reference/server.conf),':168C '/en/splunk-enterprise/administer/admin-manual/10.4/splunk-sidecars/sidecar-configuration-settings)':175C '/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access),':164C '10.2.8':86C '10.4.4':84C 'access':161C 'account':70B,116C 'admin':5A,35B,94C 'appear':146C 'arbitrari':64B,109C 'base':159C 'cluster':24B,52B,77B,123C,143C 'command':10A,67B,112C 'configur':156C,171C 'could':99C 'cve':14A,17A 'databas':12A,45B,104C,137C 'deriv':41B,100C,134C 'document':179C 'enterpris':2A,30B,73B,81C,119C 'head':23B,51B,76B,122C,142C 'help.splunk.com':163C,167C,174C 'help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.2/configuration-file-reference/10.2.0-configuration-file-reference/server.conf),':166C 'help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/splunk-sidecars/sidecar-configuration-settings)':173C 'help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.2/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access),':162C 'hold':92C 'host':27B 'identifi':53B,144C 'inform':153C 'job':57B,149C 'let':61B 'log':58B,150C 'member':78B,124C 'non':4A 'non-admin':3A 'oper':65B,110C 'os':9A 'password':13A,47B,60B,106C,138C 'possibl':128C 'postgresql':43B,102C,131C 'power':37B,96C 'privileg':136C 'role':39B,98C,158C 'role-bas':157C 'run':8A,63B,71B,108C,117C 'runtim':20B 'search':22B,50B,56B,75B,121C,141C,148C 'search-head-clust':21B 'see':154C 'self':26B 'self-host':25B 'server.conf':165C 'servic':133C 'set':172C 'shown':54B 'sidecar':44B,103C,132C,170C 'splunk':1A,29B,38B,72B,80C,97C,118C,178C 'splunk-enterpris':28B 'superus':46B,105C 'system':66B,111C 'user':6A,32B,88C,115C,160C 'version':82C 'via':11A 'vulner':126C 'without':33B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-21T23:17:27+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"psirt@cisco.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-76298","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76298","severity":null,"published_at":"2026-10-21T23:17:27+00:00","modified_at":"2026-10-23T04:18:17+00:00","first_seen_at":"2026-10-23T21:57:29+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2026-76298","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76298","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T13:15:54+00:00","fetched_at":"2026-10-24T13:15:54+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}