CVE-2026-76332 in Splunk
Summary
by MITRE • 08/20/2026
In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, an unauthenticated user could trick an authenticated user into opening a crafted link to Analytics Workspace. When the authenticated user opens the link, Splunk Enterprise runs attacker-controlled Search Processing Language (SPL) using the permissions of that user. The injected SPL could access data and perform actions available to that user. The vulnerability is possible because Analytics Workspace does not sufficiently validate data used to build searches. The vulnerability requires the attacker to phish the user by tricking them into opening the crafted link. The unauthenticated user should not be able to exploit the vulnerability at will.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 08/20/2026
The identified vulnerability in Splunk Enterprise versions prior to 10.4.2, 10.2.6, 10.0.9, and 9.4.14 represents a critical security flaw within the Analytics Workspace component, specifically categorized under CWE-79 for Cross-Site Scripting or more accurately in this context as an Injection vulnerability due to insufficient validation of user-supplied data used to construct search queries. This weakness allows an unauthenticated attacker to craft malicious links that, when opened by an authenticated user, trigger the execution of Search Processing Language commands with the privileges of that victim. The core technical failure lies in the lack of rigorous input sanitization and context-aware encoding within the Analytics Workspace module, which fails to distinguish between legitimate search parameters and injected command payloads before they are processed by the underlying Splunk engine.
From an operational perspective, this vulnerability facilitates a sophisticated phishing-based attack vector where social engineering is required to initiate exploitation. An attacker must first deceive a valid user into clicking or opening a specially crafted URL that points to a manipulated Analytics Workspace interface element. Once the authenticated session is active and the link is accessed, the system interprets the malicious input as part of a legitimate search query. Consequently, the Splunk engine executes Search Processing Language commands embedded within the payload, effectively granting the attacker indirect access to all data sources and actions that the victim user is authorized to view or perform. This bypasses traditional authentication controls because the execution occurs within the context of an already authenticated session, leveraging the trust relationship between the browser and the application server.
The impact of this vulnerability extends beyond simple data exfiltration; it enables potential privilege escalation relative to the compromised account's scope. Depending on the permissions assigned to the targeted user, the attacker could potentially access sensitive logs, extract confidential information, or even execute commands that modify system configurations if those actions are permitted under the victim’s role. This aligns with ATT&CK technique T1059 Command and Scripting Interpreter, specifically through Splunk SPL execution, allowing adversaries to interact directly with the platform's data processing capabilities without needing direct shell access or API keys initially. The requirement for user interaction means this is not an automated remote code execution vulnerability but rather a targeted attack that relies on human error, making it particularly dangerous in environments where users may be less vigilant about URL origins within internal applications.
Mitigation strategies must prioritize immediate patching to the latest stable release of Splunk Enterprise, which includes fixes for input validation and output encoding issues within Analytics Workspace. In scenarios where upgrading is not immediately feasible, administrators should implement strict access controls limiting who can create or share dashboard panels that utilize dynamic search parameters. Additionally, deploying web application firewalls with rules capable of detecting anomalous SPL syntax patterns in URL parameters may provide a layer of defense against exploitation attempts. Security awareness training for users regarding the risks of clicking on internal links from unverified sources remains essential to reduce the success rate of such phishing campaigns. Regular audits of user permissions and role-based access controls can also limit the blast radius if an account is compromised, ensuring that even successful injection results in minimal data exposure or system impact.