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CVE-2026-20260— Log Injection through HTTP Request Paths in Splunk SOAR

Quick assessment

Affected
Splunk Splunk SOAR
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.

Splunk SOAR是Splunk公司的一个安全编排、自动化与响应平台。 Splunk SOAR 8.5.0之前版本存在安全漏洞，该漏洞源于SOAR在写入应用日志前未从HTTP请求路径中剥离控制字符，可能导致未经身份验证的攻击者通过特制HTTP请求路径向日志文件中注入ANSI转义码。

CVSS 4.3 · Medium EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1560.002 · Archive via Library

Affected Version Matrix 1

VendorProduct Version RangeStatus
Splunk Splunk SOAR 8.5< 8.5.0 affected
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I. Basic Information for CVE-2026-20260

Vulnerability Information
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Vulnerability Title
Log Injection through HTTP Request Paths in Splunk SOAR
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk SOAR (Security Orchestration, Automation, and Response) versions below 8.5.0, an unauthenticated attacker could inject American National Standards Institute (ANSI) escape codes into SOAR application log files through specially crafted HTTP request paths, which a terminal emulator might interpret when an administrator views the logs.<br><br>The injection is possible because SOAR does not strip control characters from HTTP request paths before writing them to application logs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
Vulnerability Title
Splunk SOAR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Splunk SOAR是Splunk公司的一个安全编排、自动化与响应平台。 Splunk SOAR 8.5.0之前版本存在安全漏洞，该漏洞源于SOAR在写入应用日志前未从HTTP请求路径中剥离控制字符，可能导致未经身份验证的攻击者通过特制HTTP请求路径向日志文件中注入ANSI转义码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Splunk Splunk SOAR 8.5 ~ 8.5.0 -

II. Public POCs for CVE-2026-20260

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III. Intelligence Information for CVE-2026-20260

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Vendor Advisories for CVE-2026-20260 (1)

Same Patch Batch · Splunk · 2026-06-10 · 10 CVEs total

CVE-2026-20253 9.8 CRITICAL Unauthenticated Arbitrary File Creation and Truncation in a PostgreSQL Sidecar Service End
CVE-2026-20251 8.8 HIGH Remote Code Execution through Deserialization of Untrusted Data in Splunk Secure Gateway
CVE-2026-20252 7.6 HIGH Server-Side Request Forgery (SSRF) through Dashboard Studio PDF Export in Splunk Enterpris
CVE-2026-20258 7.1 HIGH Stored Cross-Site Scripting (XSS) through Classic Dashboard in Splunk Enterprise
CVE-2026-20254 5.7 MEDIUM Information Disclosure through External Content Restriction Bypass in Splunk Enterprise
CVE-2026-20257 5.7 MEDIUM Improper Input Validation through Classic Dashboard CSS in Splunk Enterprise
CVE-2026-20255 5.7 MEDIUM Improper Input Validation through Classic Dashboards in Splunk Enterprise
CVE-2026-20256 5.7 MEDIUM Improper Input Validation through Protocol-Relative URL in Classic Dashboards in Splunk En
CVE-2026-20259 5.5 MEDIUM Improper Access Control in Splunk Enterprise

IV. Related Vulnerabilities

Same product: Splunk SOAR
Same vendor: Splunk
Same weakness: CWE-117

V. Comments for CVE-2026-20260

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