CVE-2026-18800

Information Disclosure via Event Publisher Logging in Multiple WSO2 Products Allows Retrieval of Sensitive Data

Published Nov 2, 2026 CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

WSO2

WSO2 API Manager

unaffected

Version	Status	Constraints
`0`	unknown	< 3.1.0
`3.1.0`	affected	< 3.1.0.357
`3.2.0`	affected	< 3.2.0.465
`3.2.1`	affected	< 3.2.1.84
`4.1.0`	affected	< 4.1.0.249
`4.2.0`	affected	< 4.2.0.189
`4.3.0`	affected	< 4.3.0.100
`4.4.0`	affected	< 4.4.0.64
`4.5.0`	affected	< 4.5.0.49
`4.6.0`	affected	< 4.6.0.13

WSO2

WSO2 Traffic Manager

unaffected

Version	Status	Constraints
`0`	unknown	< 4.5.0
`4.5.0`	affected	< 4.5.0.48
`4.6.0`	affected	< 4.6.0.13

WSO2

WSO2 API Control Plane

unaffected

Version	Status	Constraints
`0`	unknown	< 4.5.0
`4.5.0`	affected	< 4.5.0.50
`4.6.0`	affected	< 4.6.0.14

WSO2

WSO2 Universal Gateway

unaffected

Version	Status	Constraints
`0`	unknown	< 4.5.0
`4.5.0`	affected	< 4.5.0.49
`4.6.0`	affected	< 4.6.0.13

WSO2

WSO2 Identity Server

unaffected

Version	Status	Constraints
`0`	unknown	< 5.10.0
`5.10.0`	affected	< 5.10.0.386
`5.11.0`	affected	< 5.11.0.433
`6.0.0`	affected	< 6.0.0.260
`6.1.0`	affected	< 6.1.0.261
`7.0.0`	affected	< 7.0.0.139
`7.1.0`	affected	< 7.1.0.47
`7.2.0`	affected	< 7.2.0.8

WSO2

WSO2 Identity Server as Key Manager

unaffected

Version	Status	Constraints
`0`	unknown	< 5.10.0
`5.10.0`	affected	< 5.10.0.377

WSO2

WSO2 Open Banking IAM

unaffected

Version	Status	Constraints
`0`	unknown	< 2.0.0
`2.0.0`	affected	< 2.0.0.426

WSO2

WSO2 Open Banking AM

unaffected

Version	Status	Constraints
`0`	unknown	< 2.0.0
`2.0.0`	affected	< 2.0.0.406

WSO2

WSO2 Carbon Event Publisher Core

unaffected

Version	Status	Constraints
`0`	affected	< 5.2.65
`5.3.0`	affected	< 5.3.28

No data.

Vendor Product Versions

Wso2

Api Control Plane

Version	Status	Scheme	Platform
`[4.5.0,4.5.0.50)`	affected	generic	—
`[4.6.0,4.6.0.14)`	affected	generic	—

Wso2

Api Manager

Version	Status	Scheme	Platform
`[3.1.0,3.1.0.357)`	affected	generic	—
`[3.2.0,3.2.0.465)`	affected	generic	—
`[3.2.1,3.2.1.84)`	affected	generic	—
`[4.1.0,4.1.0.249)`	affected	generic	—
`[4.2.0,4.2.0.189)`	affected	generic	—
`[4.3.0,4.3.0.100)`	affected	generic	—
`[4.4.0,4.4.0.64)`	affected	generic	—
`[4.5.0,4.5.0.49)`	affected	generic	—
`[4.6.0,4.6.0.13)`	affected	generic	—

Wso2

Identity Server

Version	Status	Scheme	Platform
`[5.10.0,5.10.0.386)`	affected	generic	—
`[5.11.0,5.11.0.433)`	affected	generic	—
`[6.0.0,6.0.0.260)`	affected	generic	—
`[6.1.0,6.1.0.261)`	affected	generic	—
`[7.0.0,7.0.0.139)`	affected	generic	—
`[7.1.0,7.1.0.47)`	affected	generic	—
`[7.2.0,7.2.0.8)`	affected	generic	—

Wso2

Wso2 Api Control Plane

Version	Status	Scheme	Platform
`[4.5.0,4.5.0.50)`	affected	generic	—
`[4.6.0,4.6.0.14)`	affected	generic	—

Wso2

Wso2 Api Manager

Version	Status	Scheme	Platform
`[3.1.0,3.1.0.357)`	affected	generic	—
`[3.2.0,3.2.0.465)`	affected	generic	—
`[3.2.1,3.2.1.84)`	affected	generic	—
`[4.1.0,4.1.0.249)`	affected	generic	—
`[4.2.0,4.2.0.189)`	affected	generic	—
`[4.3.0,4.3.0.100)`	affected	generic	—
`[4.4.0,4.4.0.64)`	affected	generic	—
`[4.5.0,4.5.0.49)`	affected	generic	—
`[4.6.0,4.6.0.13)`	affected	generic	—

Wso2

Wso2 Carbon Event Publisher Core

Version	Status	Scheme	Platform
`[0,5.2.65)`	affected	generic	—
`[5.3.0,5.3.28)`	affected	generic	—

Wso2

Wso2 Identity Server

Version	Status	Scheme	Platform
`[5.10.0,5.10.0.386)`	affected	generic	—
`[5.11.0,5.11.0.433)`	affected	generic	—
`[6.0.0,6.0.0.260)`	affected	generic	—
`[6.1.0,6.1.0.261)`	affected	generic	—
`[7.0.0,7.0.0.139)`	affected	generic	—
`[7.1.0,7.1.0.47)`	affected	generic	—
`[7.2.0,7.2.0.8)`	affected	generic	—

Wso2

Wso2 Identity Server As Key Manager

Version	Status	Scheme	Platform
`[5.10.0,5.10.0.377)`	affected	generic	—

Wso2

Wso2 Open Banking Am

Version	Status	Scheme	Platform
`[2.0.0,2.0.0.406)`	affected	generic	—

Wso2

Wso2 Open Banking Iam

Version	Status	Scheme	Platform
`[2.0.0,2.0.0.426)`	affected	generic	—

Wso2

Wso2 Traffic Manager

Version	Status	Scheme	Platform
`[4.5.0,4.5.0.48)`	affected	generic	—
`[4.6.0,4.6.0.13)`	affected	generic	—

Wso2

Wso2 Universal Gateway

Version	Status	Scheme	Platform
`[4.5.0,4.5.0.49)`	affected	generic	—
`[4.6.0,4.6.0.13)`	affected	generic	—

Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4897/#solution

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.161% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4897/

History

Nov 2, 2026 6:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Nov 2, 2026 12:30 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Wso2 Wso2 api Control Plane Wso2 api Manager Wso2 identity Server Wso2 wso2 Api Control Plane Wso2 wso2 Api Manager Wso2 wso2 Carbon Event Publisher Core Wso2 wso2 Identity Server Wso2 wso2 Identity Server As Key Manager Wso2 wso2 Open Banking Am Wso2 wso2 Open Banking Iam Wso2 wso2 Traffic Manager Wso2 wso2 Universal Gateway
Vendors & Products		Wso2 Wso2 api Control Plane Wso2 api Manager Wso2 identity Server Wso2 wso2 Api Control Plane Wso2 wso2 Api Manager Wso2 wso2 Carbon Event Publisher Core Wso2 wso2 Identity Server Wso2 wso2 Identity Server As Key Manager Wso2 wso2 Open Banking Am Wso2 wso2 Open Banking Iam Wso2 wso2 Traffic Manager Wso2 wso2 Universal Gateway

Nov 2, 2026 10:15 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		Information Disclosure via Event Publisher Logging in Multiple WSO2 Products Allows Retrieval of Sensitive Data
Weaknesses		CWE-532
References		https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4897/
Metrics		cvssV3_1 `{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}`

Subscriptions

Wso2 Api Control Plane Api Manager Identity Server Wso2 Api Control Plane Wso2 Api Manager Wso2 Carbon Event Publisher Core Wso2 Identity Server Wso2 Identity Server As Key Manager Wso2 Open Banking Am Wso2 Open Banking Iam Wso2 Traffic Manager Wso2 Universal Gateway

Weaknesses