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CVE-2025-26391— SolarWinds Observability Self-Hosted XSS Vulnerability

Quick assessment

Affected
SolarWinds SolarWinds Observability Self-Hosted
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.

SolarWinds Observability Self-Hosted是美国SolarWinds公司的一款观察平台。 SolarWinds Observability Self-Hosted存在跨站脚本漏洞，该漏洞源于用户创建的URL字段存在跨站脚本漏洞，可能导致低权限账户进行攻击。

CVSS 5.4 · Medium EPSS 0.28% · P19
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I. Basic Information for CVE-2025-26391

Vulnerability Information
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Vulnerability Title
SolarWinds Observability Self-Hosted XSS Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
SolarWinds Observability Self-Hosted XSS Vulnerability. The SolarWinds Platform was susceptible to a XSS vulnerability that affects user-created URL fields. This vulnerability requires authentication from a low-level account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
SolarWinds Observability Self-Hosted 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SolarWinds Observability Self-Hosted是美国SolarWinds公司的一款观察平台。 SolarWinds Observability Self-Hosted存在跨站脚本漏洞，该漏洞源于用户创建的URL字段存在跨站脚本漏洞，可能导致低权限账户进行攻击。
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
SolarWinds SolarWinds Observability Self-Hosted SolarWinds Observability Self-Hosted 2025.4 and prior versions -

II. Public POCs for CVE-2025-26391

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III. Intelligence Information for CVE-2025-26391

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Vendor Pages for CVE-2025-26391 (1)

Same Patch Batch · SolarWinds · 2025-11-18 · 5 CVEs total

CVE-2025-40549 9.1 CRITICAL SolarWinds Serv-U Path Restriction Bypass Vulnerability
CVE-2025-40548 9.1 CRITICAL SolarWinds Serv-U Broken Access Control - Remote Code Execution Vulnerability
CVE-2025-40547 9.1 CRITICAL SolarWinds Serv-U Logic Abuse - Remote Code Execution Vulnerability
CVE-2025-40545 4.8 MEDIUM SolarWinds Observability Self-Hosted Open Redirection Vulnerability

IV. Related Vulnerabilities

Same product: SolarWinds Observability Self-Hosted
Same vendor: SolarWinds
Same weakness: CWE-79

V. Comments for CVE-2025-26391

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