Server-side request forgery in Splunk App for Splunk Observability Cloud
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
Splunk Enterprise versions from 10.4 before 10.4.3, from 10.2 before 10.2.7, and from 10.0 before 10.0.10 are affected. Splunk App for Splunk Observability Cloud does not fully validate the destination of an outbound request, which is a server-side request forgery flaw (CWE-918). A user holding a role with the read_o11y_content capability can redirect that request through the REST API to an attacker-controlled host and disclose the configured Observability Cloud API token. Splunk Enterprise versions 9.4.x are not affected.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
In Splunk Enterprise versions below 10.4.3, 10.2.7, and 10.0.10, a user that holds a role with the read_o11y_content capability could redirect an outbound request from Splunk App for Splunk Observability Cloud through the Representational State Transfer (REST) API to an attacker-controlled host and disclose the configured Observability Cloud Application Programming Interface (API) token. The vulnerability is possible because Splunk App for Splunk Observability Cloud does not fully validate the destination of an outbound request. For more information see Authentication tokens (https://help.splunk.com/en/splunk-observability-cloud/administer/authentication-and-security/authentication-tokens) in the Splunk documentation. Splunk Enterprise versions 9.4.x are not affected.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Splunk | Splunk Enterprise | 10.4 to before 10.4.3; 10.2 to before 10.2.7; 10.0 to before 10.0.10 | 10.4.3, 10.2.7, 10.0.10 | Patch available | CNA |
- Splunk Enterprise VendorSplunk Affected 10.4 to before 10.4.3; 10.2 to before 10.2.7; 10.0 to before 10.0.10 Fixed in 10.4.3, 10.2.7, 10.0.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* | 10.0.0 to before 10.0.10; 10.2.0 to before 10.2.7; 10.4.0 to before 10.4.3 | Vulnerable | Splunk |
- cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:* Versions 10.0.0 to before 10.0.10; 10.2.0 to before 10.2.7; 10.4.0 to before 10.4.3 Vulnerable ·Splunk
Remediation
Upgrade Splunk Enterprise to 10.4.3, 10.2.7, or 10.0.10, depending on the release branch in use. The sources do not list a vendor advisory identifier for this fix.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Splunk Enterprise (Splunk) Fixed in 10.4.3, 10.2.7, 10.0.10
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Splunk Enterprise 10.0.10, 10.2.7, 10.4.3
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2026-69295 DoS in Discover Splunk Observability Cloud app for Splunk EnterprisePriority LOW 29
- TI-2026-69300 Source code disclosure in the Splunk Observability Cloud Discover appPriority LOW 20
- TI-2026-69302 Authorization bypass in SPL2 module permissions in Splunk EnterprisePriority LOW 19
Timeline
- 2026-10-07 Threatist record created from CVE-2026-76274
- 2026-10-07 Alias added: GHSA-4cvj-r69v-5c2j
- 2026-10-09 Priority changed: MEDIUM → LOW
- 2026-10-10 CISA SSVC decision points changed
References
More Splunk vulnerabilities
- TI-2026-16444 Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service Endpoint in Splunk Enterprise KEVCVSS 3.1CRITICAL 9.8
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2023-24841 Remote code execution (RCE) in Splunk Enterprise through Insecure XML Parsing CVSS 3.1HIGH 8.8
- TI-2023-15979 ‘edit_user’ Capability Privilege Escalation CVSS 3.1HIGH 8.8
- TI-2024-30707 Remote Code Execution (RCE) due to insecure session storage configuration in Splunk Enterprise on Windows CVSS 3.1HIGH 8.8
- TI-2022-21345 Reflected Cross-Site Scripting via the radio template in Splunk Enterprise CVSS 3.1HIGH 8.8
Sources
- CVE-2026-76274 · CVE Program
- CVE-2026-76274 · NVD
- FIRST EPSS
- GHSA-4cvj-r69v-5c2j · GitHub Advisory Database · CC BY 4.0
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