{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/splunk/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.2,"id":"CVE-2026-20205"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["splunk","credential-access","vulnerability"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-20205 affects Splunk MCP Server app versions prior to 1.0.3. The vulnerability allows a low-privileged user with access to the \u003ccode\u003e_internal\u003c/code\u003e index or the \u003ccode\u003emcp_tool_admin\u003c/code\u003e capability to view sensitive information in cleartext. This information includes user session and authorization tokens. Successful exploitation of this vulnerability requires either local access to the log files where the tokens are stored or administrative access to Splunk\u0026rsquo;s internal indexes. The default configuration limits access to the \u003ccode\u003e_internal\u003c/code\u003e index to the administrator role; however, if roles are misconfigured, less privileged users could gain unauthorized access. This vulnerability could lead to account compromise and lateral movement within the affected Splunk environment.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains access to a Splunk account with permissions to the \u003ccode\u003e_internal\u003c/code\u003e index or possesses the \u003ccode\u003emcp_tool_admin\u003c/code\u003e capability.\u003c/li\u003e\n\u003cli\u003eThe attacker accesses the \u003ccode\u003e_internal\u003c/code\u003e index through the Splunk web interface or directly via file system access (if local access is available).\u003c/li\u003e\n\u003cli\u003eThe attacker searches the \u003ccode\u003e_internal\u003c/code\u003e index for logs related to MCP Server activity.\u003c/li\u003e\n\u003cli\u003eThe attacker identifies log entries containing user session tokens and authorization tokens.\u003c/li\u003e\n\u003cli\u003eThe attacker extracts the cleartext tokens from the log entries.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the stolen session tokens to impersonate legitimate users.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the impersonated user\u0026rsquo;s privileges to access sensitive data or perform unauthorized actions.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-20205 allows an attacker to obtain user session and authorization tokens in cleartext. This compromises the confidentiality and integrity of the Splunk environment. An attacker could impersonate legitimate users, escalate privileges, and gain unauthorized access to sensitive data. The number of potential victims depends on the number of Splunk users and the extent of the misconfiguration. Sectors that heavily rely on Splunk for security monitoring, such as finance, healthcare, and government, are particularly at risk.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Splunk MCP Server app to version 1.0.3 or later to remediate CVE-2026-20205.\u003c/li\u003e\n\u003cli\u003eReview and restrict access to the \u003ccode\u003e_internal\u003c/code\u003e index to administrator-level roles only, following Splunk\u0026rsquo;s documentation on \u003ca href=\"https://docs.splunk.com/Documentation/Splunk/latest/Security/Rolesandcapabilities\"\u003edefining roles\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eMonitor Splunk audit logs for unusual access patterns to the \u003ccode\u003e_internal\u003c/code\u003e index using the Sigma rule \u003ccode\u003eSplunk Unusual Internal Index Access\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eReview and restrict the \u003ccode\u003emcp_tool_admin\u003c/code\u003e capability to only authorized personnel.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-15T16:16:34Z","date_published":"2026-04-15T16:16:34Z","id":"/briefs/2026-04-splunk-mcp-credential-access/","summary":"A user with access to the `_internal` index or the `mcp_tool_admin` capability in Splunk MCP Server app versions below 1.0.3 can view user session and authorization tokens in clear text, leading to potential credential compromise.","title":"Splunk MCP Server App Cleartext Credential Exposure (CVE-2026-20205)","url":"https://feed.craftedsignal.io/briefs/2026-04-splunk-mcp-credential-access/"}],"language":"en","title":"CraftedSignal Threat Feed — Splunk","version":"https://jsonfeed.org/version/1.1"}