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CVE-2026-76285

Improper Adherence to Coding Standards in Splunk Enterprise

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76285 are related to improper adherence to coding standards and are grouped under the Common Weakness Enumeration (CWE) CWE-710.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise
CVE-2026-76284

Improper Neutralization in Splunk Enterprise

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76284 are related to improper neutralization and are grouped under the Common Weakness Enumeration (CWE) CWE-707.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise
CVE-2026-76283

Protection Mechanism Failure in Splunk Enterprise

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76283 are related to protection mechanism failure and are grouped under the Common Weakness Enumeration (CWE) CWE-693.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise
CVE-2026-76282

Improper Control of a Resource Through its Lifetime in Splunk Enterprise

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76282 are related to improper control of a resource through its lifetime and are grouped under the Common Weakness Enumeration (CWE) CWE-664.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise
CVE-2026-76281

Improper Access Control in Splunk Enterprise

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76281 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.

CVSS n/a EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise
CVE-2026-76303

Stored Cross-Site Scripting (XSS) through App Documentation in Splunk SOAR

In Splunk SOAR versions below 8.7.0, a user that holds a role with the install_apps capability could store attacker-controlled content that Splunk SOAR displays in app documentation by installing an app. If another user who holds a role with permission to view apps opens the app documentation, Splunk SOAR could run that content in the browser of the user who opened the app documentation. With this access, the first user could access data and make changes that the user who opened the app documentation could make. The vulnerability is possible because Splunk SOAR does not sanitize app documentation content before it displays that content. The vulnerability requires the attacker to phish the affected user by tricking them into initiating a request within their browser. The user that holds a role with the install_apps capability should not be able to exploit the vulnerability at will. For more information see Manage roles and permissions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/7.1.0/manage-your-splunk-soar-on-premises-users-and-accounts/manage-roles-and-permissions-in-splunk-soar-on-premises) and Add and configure apps and assets to provide actions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/8.6.0/manage-your-splunk-soar-on-premises-apps-and-assets/add-and-configure-apps-and-assets-to-provide-actions-in-splunk-soar-on-premises) in the Splunk documentation.

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Soar Splunk
CVE-2024-36984

Remote Code Execution through Serialized Session Payload in Splunk Enterprise on Windows

In Splunk Enterprise versions below 9.2.2, 9.1.5, and 9.0.10 on Windows, an authenticated user could execute a specially crafted query that they could then use to serialize untrusted data. The attacker could use the query to execute arbitrary code.

CVSS 3.1 · 8.8 High EPSS 1.4% KEV · Not listed
Vendors
Splunk
Products
Enterprise Security Splunk
CVE-2026-76407

Improper Access Control in Splunk SOAR

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76407 are related to improper access control and are grouped under the Common Weakness Enumeration (CWE) CWE-284.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk
CVE-2026-76528

Protection Mechanism Failure in Splunk SOAR

As part of Cisco's ongoing commitment to proactive security and product quality, Cisco has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76528 are related to protection mechanism failure and are grouped under the Common Weakness Enumeration (CWE) CWE-693.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk
CVE-2023-27537

curl: HSTS double-free

A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free.

CVSS 3.1 · 5.9 Medium EPSS 1.9% KEV · Not listed
Vendors
Broadcom Haxx Netapp and 1 more
Products
Brocade Fabric Operating System Firmware Libcurl Active Iq Unified Manager and 10 more
CVE-2022-32156

Splunk Enterprise and Universal Forwarder CLI connections lacked TLS cert validation

In Splunk Enterprise and Universal Forwarder versions before 9.0, the Splunk command-line interface (CLI) did not validate TLS certificates while connecting to a remote Splunk platform instance by default. After updating to version 9.0, see Configure TLS host name validation for the Splunk CLI https://docs.splunk.com/Documentation/Splunk/9.0.0/Security/EnableTLSCertHostnameValidation#Configure_TLS_host_name_validation_for_the_Splunk_CLI to enable the remediation. The vulnerability does not affect the Splunk Cloud Platform. At the time of publishing, we have no evidence of exploitation of this vulnerability by external parties. The issue requires conditions beyond the control of a potential bad actor such as a machine-in-the-middle attack. Hence, Splunk rates the complexity of the attack as High.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Universal Forwarder
CVE-2026-76306

Information Disclosure through REST API Query Filters in Splunk SOAR

In Splunk SOAR versions below 8.7.0, a user that has the "Observer" role could use query filters in the Representational State Transfer (REST) API to infer password hashes and authorization tokens for other users. The information disclosure is possible because Splunk SOAR applies REST API query filters to user records before it protects sensitive fields from query processing. For 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), Query for Data (https://help.splunk.com/en/splunk-soar/soar-on-premises/rest-api-reference/7.1.0/using-the-splunk-soar-rest-api/query-for-data), and Manage roles and permissions in Splunk SOAR (On-premises) (https://help.splunk.com/en/splunk-soar/soar-on-premises/administer-soar-on-premises/8.5.0/manage-your-splunk-soar-on-premises-users-and-accounts/manage-roles-and-permissions-in-splunk-soar-on-premises) in the Splunk documentation.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk
CVE-2022-27779

curl: cookie for trailing dot TLD

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

CVSS 3.1 · 5.3 Medium EPSS 2.8% KEV · Not listed
Vendors
Haxx Netapp Splunk
Products
Curl Clustered Data Ontap H300s and 12 more
CVE-2021-31566

libarchive: symbolic links incorrectly followed when changing modes, times, ACL and flags of a file while extracting an archive

An improper link resolution flaw can occur while extracting an archive leading to changing modes, times, access control lists, and flags of a file outside of the archive. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to gain more privileges in a system.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Libarchive and 2 more
Products
Debian Linux Fedora Libarchive and 11 more
CVE-2020-8169

libcurl: partial password leak over DNS on HTTP redirect

curl 7.62.0 through 7.70.0 is vulnerable to an information disclosure vulnerability that can lead to a partial password being leaked over the network and to the DNS server(s).

CVSS 3.1 · 7.5 High EPSS 3.9% KEV · Not listed
Vendors
Debian Haxx Redhat and 2 more
Products
Debian Linux Curl Jboss Core Services and 4 more
CVE-2019-20454

pcre: Out of bounds read in JIT mode when \X is used in non-UTF mode

An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.

CVSS 3.1 · 7.5 High EPSS 1.6% KEV · Not listed
Vendors
Fedoraproject Pcre Redhat and 1 more
Products
Fedora Pcre2 Enterprise Linux and 1 more
CVE-2026-76287

Authorization Bypass in the Data Management REST API in Splunk Enterprise

In Splunk Enterprise versions below 10.4.4, a user that holds a role with the preview_data_management_pipeline capability or edit_data_management_pipeline_job capability could read or delete Data Management SPL2 preview jobs and results outside their ownership scope. The vulnerability is possible because the Data Management Representational State Transfer (REST) API verifies the required capability but does not verify that the requested preview job belongs to the requester. The affected Data Management REST API is available only when the Edge Processor feature is turned on. The Edge Processor feature is turned off by default. For more information see Set up a data management control plane (https://help.splunk.com/en/splunk-enterprise/process-data-at-the-edge/use-edge-processors-for-splunk-enterprise/10.4/getting-started/set-up-a-data-management-control-plane) and Getting sample data for previewing data transformations (https://help.splunk.com/en/splunk-enterprise/process-data-at-the-edge/use-edge-processors-for-splunk-enterprise/10.4/working-with-pipelines/getting-sample-data-for-previewing-data-transformations) in the Splunk documentation.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise
CVE-2026-76288

Denial of Service (DoS) through Splunk Web Content-Type Header Parsing in Splunk Enterprise

In Splunk Enterprise versions below 10.4.4, 10.2.8, 10.0.11, and 9.4.16, an unauthenticated user could send a single crafted request to the Splunk Web JavaScript logger endpoint and cause Splunk Web to stop responding to requests. Splunk Web remains unavailable until Splunk Enterprise is restarted. The vulnerability is possible because Splunk Web does not limit request-header parsing before processing the request.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Splunk
Products
Splunk Splunk Enterprise