CVE-2026-76267— Log Injection through the REST API in Splunk App for Splunk O11y Cloud
Quick assessment
Affected
Splunk Splunk Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 Splunk Enterprise 低于 10.4.3、10.2.7 和 10.0.10 的版本中，拥有 能力的角色的用户，可以通过表示状态转移（REST）应用程序编程接口注入伪造的条目进入应用程序日志。该漏洞的可能原因是在写入应用程序日志之前 Splunk App for Splunk O11y Cloud 没有中和用户提供的 SignalFlow 内容。 Splunk Enterprise 9.4.x 版本不受影响。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-76267
Vulnerability Information
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Vulnerability Title
Log Injection through the REST API in Splunk App for Splunk O11y Cloud
Source: CVE Program / CVE List V5
Vulnerability Description
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 inject forged entries into the app log through the Representational State Transfer (REST) API. The vulnerability is possible because Splunk App for Splunk O11y Cloud does not neutralize user-supplied SignalFlow content before writing it to the app log.
Splunk Enterprise versions 9.4.x are not affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
日志输出的转义处理不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Splunk | Splunk Enterprise | 10.4 ~ 10.4.3 | - |
|
II. Public POCs for CVE-2026-76267
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-76267 (1)
Same Patch Batch · Splunk · 2026-10-07 · 23 CVEs total
| CVE-2026-76268 | 9.8 CRITICAL | Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise |
| CVE-2026-76266 | 7.7 HIGH | Local Privilege Escalation through Linux Package Upgrades in Splunk Enterprise |
| CVE-2026-76265 | 6.5 MEDIUM | Improper Access Control through REST API Endpoints in Splunk Secure Gateway |
| CVE-2026-76274 | 6.5 MEDIUM | Server-Side Request Forgery (SSRF) through the REST API in Splunk App for Splunk Observabi |
| CVE-2026-76269 | 6.5 MEDIUM | Improper Access Control in Search Job Retrieval through the REST API in Splunk Enterprise |
| CVE-2026-76270 | 6.5 MEDIUM | Structured Query Language (SQL) Injection in the SPL2 Module Catalog in Splunk Enterprise |
| CVE-2026-76271 | 6.5 MEDIUM | Denial of Service (DoS) in the Discover Splunk Observability Cloud app for Splunk Enterpri |
| CVE-2026-76280 | 6.3 MEDIUM | Incorrect Permission Assignment for App Key Value Store Collections in Splunk Secure Gatew |
| CVE-2026-76286 | 5.3 MEDIUM | Server-Side Request Forgery (SSRF) through Custom API Tools in Splunk MCP Server |
| CVE-2026-76278 | 4.3 MEDIUM | Authorization Bypass in SPL2 Module Permissions in Splunk Enterprise |
| CVE-2026-76272 | 4.3 MEDIUM | Missing Access Control through the REST API in Splunk Secure Gateway |
| CVE-2026-76264 | 4.3 MEDIUM | Improper Authorization through the REST API in Splunk Enterprise |
| CVE-2026-76276 | 4.3 MEDIUM | Information Disclosure in the Discover Splunk Observability Cloud app through Splunk Web f |
| CVE-2026-76275 | 4.3 MEDIUM | Improper Authorization in Search Job Listings through the REST API in Splunk Enterprise |
| CVE-2026-76273 | 4.3 MEDIUM | Improper Input Validation through the collect Command in Splunk Enterprise |
| CVE-2026-76279 | 4.3 MEDIUM | Improper Input Validation of Index Names through the collect Command in Splunk Enterprise |
| CVE-2026-76277 | 4.1 MEDIUM | Improper Input Validation of Native Splunk Usernames through the REST API in Splunk Enterp |
| CVE-2026-76281 | Improper Access Control in Splunk Enterprise | |
| CVE-2026-76284 | Improper Neutralization in Splunk Enterprise | |
| CVE-2026-76283 | Protection Mechanism Failure in Splunk Enterprise |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Splunk Enterprise
-
CVE-2026-76285
Improper Adherence to Coding Standards in Splunk Enterprise -
CVE-2026-76284
Improper Neutralization in Splunk Enterprise -
CVE-2026-76283
Protection Mechanism Failure in Splunk Enterprise -
CVE-2026-76282
Improper Control of a Resource Through its Lifetime in Splun -
CVE-2026-76281
Improper Access Control in Splunk Enterprise
Same vendor: Splunk
-
CVE-2026-76285
Improper Adherence to Coding Standards in Splunk Enterprise -
CVE-2026-76286
Server-Side Request Forgery (SSRF) through Custom API Tools -
CVE-2026-76283
Protection Mechanism Failure in Splunk Enterprise -
CVE-2026-76284
Improper Neutralization in Splunk Enterprise -
CVE-2026-76281
Improper Access Control in Splunk Enterprise
Same weakness: CWE-117
-
CVE-2026-85290
InvoicePlane: Log Injection via Unsanitized User Input in Cr -
CVE-2026-93421
Mesop: Unauthenticated ANSI Escape Sequence Injection in CSP -
CVE-2026-6327
Multiple Vulnerabilities in IBM Concert Software -
CVE-2026-11538
IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5 -
CVE-2026-86522
Log injection via an unescaped password reset identity in As
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