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Splunk Enterprise CVE-2026-20296

| EUVDEUVD-2026-44737 HIGH
Cross-Site Request Forgery (CSRF) (CWE-352)
2026-07-15 cisco GHSA-hxgj-4vg5-fpww
8.3
CVSS 3.1 · Vendor: cisco
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Severity by source

Vendor (cisco) PRIMARY
8.3 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
vuln.today AI
8.3 HIGH

CSRF uses the victim's session so PR:N with UI:R; network-reachable Web endpoint and simple forged GET give AV:N/AC:L; credential and data access yield C:H/I:H with limited A:L.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (cisco).

CVSS VectorVendor: cisco

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

Lifecycle Timeline

3
Patch available
Jul 15, 2026 - 21:18 EUVD
Analysis Generated
Jul 15, 2026 - 17:50 vuln.today
CVE Published
Jul 15, 2026 - 17:18 cve.org
HIGH 8.3

DescriptionCVE.org

In Splunk Enterprise versions below 10.4.1, 10.2.5, 10.0.8, and 9.4.13, and Splunk Cloud Platform versions below 10.5.2605.0, 10.4.2604.7, 10.3.2512.16, 10.2.2510.18, and 10.1.2507.24, an attacker could trick a user that holds a role with the list_deployment_server capability into running arbitrary Search Processing Language (SPL) searches on their behalf as splunk-system-user, allowing for access to stored credentials and indexed data.<br><br>The vulnerability is possible because Deployment Server endpoints in Splunk Web do not validate Cross-Site Request Forgery (CSRF) tokens on GET requests, and caller-supplied input is not correctly neutralized before it is placed into an SPL search.

AnalysisAI

Cross-Site Request Forgery combined with SPL injection in Splunk Enterprise (below 10.4.1, 10.2.5, 10.0.8, 9.4.13) and Splunk Cloud Platform lets an attacker trick a logged-in user holding the list_deployment_server capability into unknowingly executing attacker-controlled Search Processing Language searches as the privileged splunk-system-user, exposing stored credentials and indexed data. The flaw stems from Deployment Server endpoints in Splunk Web accepting unvalidated GET requests without CSRF token checks and failing to neutralize caller input before it reaches an SPL search. No public exploit has been identified at time of analysis and it is not listed in CISA KEV.

Technical ContextAI

The affected component is Splunk Web's Deployment Server, the management-plane feature used to centrally distribute configurations and apps to Splunk forwarders and instances. The root cause is CWE-352 (Cross-Site Request Forgery): the Deployment Server endpoints do not validate anti-CSRF tokens on HTTP GET requests, so a request forged by a malicious page is treated as legitimate when the victim's browser carries their Splunk session. This is compounded by an injection weakness - caller-supplied input is not correctly neutralized before being embedded into an SPL query - turning the CSRF into a vehicle for arbitrary SPL execution. Because the injected search runs as the internal splunk-system-user identity, it inherits broad access to secret storage (stored credentials) and to indexed data across the deployment. Per the CPE data, both cpe:2.3:a:splunk:splunk_enterprise and cpe:2.3:a:splunk:splunk_cloud_platform are affected.

RemediationAI

Upgrade to a fixed release: Splunk Enterprise 10.4.1, 10.2.5, 10.0.8, or 9.4.13 (on the respective maintained branch); Splunk Cloud Platform is remediated in 10.5.2605.0, 10.4.2604.7, 10.3.2512.16, 10.2.2510.18, and 10.1.2507.24, which Splunk applies to managed Cloud tenants. Consult the vendor advisory at https://advisory.splunk.com/advisories/SVD-2026-0702 for branch-specific guidance. Where immediate patching is not possible, reduce exposure by restricting the list_deployment_server capability to the minimum set of roles/users (removing it from broadly-assigned roles), which directly shrinks the pool of viable CSRF victims but may hamper legitimate deployment-server visibility; instruct privileged operators to avoid browsing untrusted sites while authenticated to Splunk Web and to log out of admin sessions when idle; and place Splunk Web behind network access controls (VPN/IP allowlists) so the management UI is not broadly reachable, at the cost of admin convenience. Patch status: vendor-released patch - Splunk Enterprise 10.4.1 / 10.2.5 / 10.0.8 / 9.4.13.

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CVE-2026-20296 vulnerability details – vuln.today

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