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CVE-2026-18800— Information Disclosure via Event Publisher Logging in Multiple WSO2 Products Allows Retrieval of Sensitive Data

Quick assessment

Affected
WSO2 WSO2 API Manager
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.

当事件发布器（Event Publisher）输出适配器被配置了与其功能无关的属性时，受影响的产品会将这些无关属性记录到日志中。根据误配置属性的性质，这些日志可能无意中包含敏感的用户凭证或其他机密信息。 能够访问"wso2carbon"日志文件的攻击者可从中提取系统记录的敏感信息。如果日志数据中包含凭证或其他关键机密，这可能导致未授权访问。

CVSS 4.4 · Medium

Possible ATT&CK Techniques 1 AI

T1040 · Network Sniffing
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I. Basic Information for CVE-2026-18800

Vulnerability Information
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Vulnerability Title
Information Disclosure via Event Publisher Logging in Multiple WSO2 Products Allows Retrieval of Sensitive Data
Source: CVE Program / CVE List V5
Vulnerability Description
When an Event Publisher output adapter is configured with properties that are irrelevant to its function, the affected products log these irrelevant properties. This can inadvertently include sensitive user credentials or other confidential information depending on the nature of the misconfigured property. A malicious actor with access to the 'wso2carbon' log files could retrieve sensitive information logged by the system. This may potentially lead to unauthorized access if the logged data contains credentials or other critical secrets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WSO2 WSO2 API Manager 3.1.0 ~ 3.1.0.357 -
WSO2 WSO2 Traffic Manager 4.5.0 ~ 4.5.0.48 -
WSO2 WSO2 API Control Plane 4.5.0 ~ 4.5.0.50 -
WSO2 WSO2 Universal Gateway 4.5.0 ~ 4.5.0.49 -
WSO2 WSO2 Identity Server 5.10.0 ~ 5.10.0.386 -
WSO2 WSO2 Identity Server as Key Manager 5.10.0 ~ 5.10.0.377 -
WSO2 WSO2 Open Banking IAM 2.0.0 ~ 2.0.0.426 -
WSO2 WSO2 Open Banking AM 2.0.0 ~ 2.0.0.406 -
WSO2 WSO2 Carbon Event Publisher Core 0 ~ 5.2.65 -

II. Public POCs for CVE-2026-18800

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III. Intelligence Information for CVE-2026-18800

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Vendor Advisories for CVE-2026-18800 (1)

Same Patch Batch · WSO2 · 2026-11-02 · 10 CVEs total

CVE-2025-11969 9.4 CRITICAL Broken Access Control via System REST APIs in Multiple WSO2 Products Allows Unauthorized A
CVE-2026-2613 8.7 HIGH SQL Injection via Admin REST API in Multiple WSO2 Products Allows Database Information Inf
CVE-2025-13647 5.8 MEDIUM Information Disclosure in Multiple WSO2 Products Allows Exposure of Certificate File Paths
CVE-2024-2372 5.4 MEDIUM Open Redirection via Unsanitized User Input in Multiple WSO2 Products Allows Phishing Atta
CVE-2024-9517 4.9 MEDIUM Improper Token Renewal in Refresh Token Grant in Multiple WSO2 Products Allows Unauthorize
CVE-2024-5617 4.8 MEDIUM Account Lock Bypass via User Store Synchronization in Multiple WSO2 Products Allows Brute
CVE-2025-12544 4.8 MEDIUM Stored Cross-Site Scripting in Multiple WSO2 Products
CVE-2024-7075 4.6 MEDIUM Reflected Cross-Site Scripting via User Search Function in Management Console of Multiple
CVE-2024-12141 4.3 MEDIUM Open Redirect via Callback URL Validation in WSO2 Products Allows Phishing Attacks

IV. Related Vulnerabilities

Same product: WSO2 API Manager
Same vendor: WSO2
Same weakness: CWE-532