Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-20202— Improper Input Validation during User Account Creation in Splunk Enterprise

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.

Splunk Cloud Platform和Splunk Enterprise都是美国Splunk公司的产品。Splunk Cloud Platform是一个强大的数据收集、处理和分析服务。Splunk Enterprise是一套数据收集分析软件。 Splunk Cloud Platform和Splunk Enterprise存在安全漏洞，该漏洞源于输入验证不当，可能导致用户创建包含空字节或非UTF-8百分号编码字节的用户名，引发账户管理不一致性问题。以下版本受到影响：Splunk Enterprise

CVSS 6.6 · Medium EPSS 0.25% · P14

Possible ATT&CK Techniques 1 AI

T1136.003 · Cloud Account
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-20202

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Improper Input Validation during User Account Creation in Splunk Enterprise
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13, and 9.3.2411.127, a user who holds a role that contains the high-privilege capability `edit_user`could create a specially crafted username that includes a null byte or a non-UTF-8 percent-encoded byte due to improper input validation.<br><br>This could lead to inconsistent conversion of usernames into a proper format for storage and account management inconsistencies, such as being unable to edit or delete affected users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
Unicode编码处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Splunk Cloud Platform和Splunk Enterprise 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Splunk Cloud Platform和Splunk Enterprise都是美国Splunk公司的产品。Splunk Cloud Platform是一个强大的数据收集、处理和分析服务。Splunk Enterprise是一套数据收集分析软件。 Splunk Cloud Platform和Splunk Enterprise存在安全漏洞，该漏洞源于输入验证不当，可能导致用户创建包含空字节或非UTF-8百分号编码字节的用户名，引发账户管理不一致性问题。以下版本受到影响：Splunk Enterprise
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 Enterprise 10.2 ~ 10.2.2 -
Splunk Splunk Cloud Platform 10.4.2603 ~ Not Affected -

II. Public POCs for CVE-2026-20202

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-20202

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-20202 (1)

Same Patch Batch · Splunk · 2026-04-15 · 4 CVEs total

CVE-2026-20205 7.2 HIGH Sensitive Information Disclosure in ''_internal'' index in Splunk MCP Server app
CVE-2026-20204 7.1 HIGH Improper Handling and Insufficient Isolation of Specific Temporary Files in Splunk Enterpr
CVE-2026-20203 4.3 MEDIUM Improper Access Control in Data Model Acceleration in Splunk Enterprise

IV. Related Vulnerabilities

Same product: Splunk Enterprise
Same vendor: Splunk
Same weakness: CWE-176

V. Comments for CVE-2026-20202

No comments yet

Leave a comment