CVE-2026-0637 - Vulnerability Details

- Sensitive Information Disclosure via Event Publisher Logging in Multiple WSO2 Products

Description

When an Event Publisher output adapter is configured with irrelevant properties, the affected products log these properties. This logging occurs without sufficient validation or sanitization of the property values.

A malicious actor with access to the 'wso2carbon' log files could retrieve sensitive information, such as user credentials or other confidential data, that was inadvertently logged due to misconfiguration, potentially leading to unauthorized access.

Published: 2026-08-06

Score: 4.4 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

A flaw in the Event Publisher output adapter causes configuration properties to be logged without proper validation or sanitization. This logging can capture sensitive data, such as user credentials, that should not appear in log files. The result is a leakage of confidential information, classified as a Sensitive Information Disclosure (CWE-532).

Affected Systems

The vulnerability affects several WSO2 products, including 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, and WSO2 Universal Gateway. No specific software versions are listed, so all current releases are potentially impacted.

Risk and Exploitability

The CVSS score of 4.4 indicates a moderate severity. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. Exploitation requires the attacker to gain access to the linked log files (wso2carbon), typically through privileged or local access. Once logged, the attacker can read the exposed credentials or other sensitive content. The attack vector is likely internal or acquired through compromise, rather than a remote exploitation path.

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

unknown

Version	Status	Constraints
`5.2.24`	affected	< 5.2.24.11
`5.2.26`	affected	< 5.2.26.24
`5.2.27`	affected	< 5.2.27.7
`5.2.41`	affected	< 5.2.41.8
`5.2.45`	affected	< 5.2.45.2
`5.2.50`	affected	< 5.2.50.3
`5.2.57`	affected	< 5.2.57.12
`5.2.58`	affected	< 5.2.58.3
`5.2.61`	affected	< 5.2.61.4
`5.2.64`	affected	< 5.2.64.1
`5.3.5`	affected	< 5.3.5.10
`5.3.11`	affected	< 5.3.11.7
`5.3.15`	affected	< 5.3.15.6
`5.3.20`	affected	< 5.3.20.3
`5.3.27`	affected	< 5.3.27.1
`x`	unaffected	≤ *

Configuration 1 [-]

OR	cpe:2.3:a:wso2:api_control_plane::::::::
	cpe:2.3:a:wso2:api_control_plane::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:api_manager::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server::::::::
	cpe:2.3:a:wso2:identity_server_as_key_manager::::::::
	cpe:2.3:a:wso2:open_banking_am::::::::
	cpe:2.3:a:wso2:open_banking_iam::::::::
	cpe:2.3:a:wso2:traffic_manager::::::::
	cpe:2.3:a:wso2:traffic_manager::::::::
	cpe:2.3:a:wso2:universal_gateway::::::::
	cpe:2.3:a:wso2:universal_gateway::::::::

No data.

Vendor Product Confidence Versions

Wso2

Wso2 Api Control Plane

100%

Version	Status	Scheme	Platform
`[0,4.5.0)`	unknown	generic	—
`[4.5.0,4.5.0.50)`	affected	generic	—
`[4.6.0,4.6.0.14)`	affected	generic	—

Wso2

Wso2 Api Manager

100%

Version	Status	Scheme	Platform
`[0,3.1.0)`	unknown	generic	—
`[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

100%

Version	Status	Scheme	Platform
`[5.2.24,5.2.24.11)`	affected	generic	—
`[5.2.26,5.2.26.24)`	affected	generic	—
`[5.2.27,5.2.27.7)`	affected	generic	—
`[5.2.41,5.2.41.8)`	affected	generic	—
`[5.2.45,5.2.45.2)`	affected	generic	—
`[5.2.50,5.2.50.3)`	affected	generic	—
`[5.2.57,5.2.57.12)`	affected	generic	—
`[5.2.58,5.2.58.3)`	affected	generic	—
`[5.2.61,5.2.61.4)`	affected	generic	—
`[5.2.64,5.2.64.1)`	affected	generic	—
`[5.3.5,5.3.5.10)`	affected	generic	—
`[5.3.11,5.3.11.7)`	affected	generic	—
`[5.3.15,5.3.15.6)`	affected	generic	—
`[5.3.20,5.3.20.3)`	affected	generic	—
`[5.3.27,5.3.27.1)`	affected	generic	—
`[x,*]`	unaffected	generic	—

Wso2

Wso2 Identity Server

100%

Version	Status	Scheme	Platform
`[0,5.10.0)`	unknown	generic	—
`[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

100%

Version	Status	Scheme	Platform
`[0,5.10.0)`	unknown	generic	—
`[5.10.0,5.10.0.377)`	affected	generic	—

Wso2

Wso2 Open Banking Am

100%

Version	Status	Scheme	Platform
`[0,2.0.0)`	unknown	generic	—
`[2.0.0,2.0.0.406)`	affected	generic	—

Wso2

Wso2 Open Banking Iam

100%

Version	Status	Scheme	Platform
`[0,2.0.0)`	unknown	generic	—
`[2.0.0,2.0.0.426)`	affected	generic	—

Wso2

Wso2 Traffic Manager

100%

Version	Status	Scheme	Platform
`[0,4.5.0)`	unknown	generic	—
`[4.5.0,4.5.0.48)`	affected	generic	—
`[4.6.0,4.6.0.13)`	affected	generic	—

Wso2

Wso2 Universal Gateway

100%

Version	Status	Scheme	Platform
`[0,4.5.0)`	unknown	generic	—
`[4.5.0,4.5.0.49)`	affected	generic	—
`[4.6.0,4.6.0.13)`	affected	generic	—

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Remediation

Vendor Solution

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

OpenCVE Recommended Actions

Apply the vendor patch or follow the instructions provided in the official advisory at https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4897/#solution.
Restrict file system permissions so that only authorized administrators can read the wso2carbon log files.
Review and sanitize Event Publisher output adapter configurations to remove irrelevant properties and enable proper logging controls.

Generated by OpenCVE AI on August 6, 2026 at 09:22 UTC.

Tracking

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Advisories

No advisories yet.

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.

The EPSS score is 0.00113.

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

Wed, 12 Aug 2026 19:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Wso2 api Control Plane Wso2 api Manager Wso2 identity Server Wso2 identity Server As Key Manager Wso2 open Banking Am Wso2 open Banking Iam Wso2 traffic Manager Wso2 universal Gateway
CPEs		cpe:2.3:a:wso2:api_control_plane:::::::: cpe:2.3:a:wso2:api_manager:::::::: cpe:2.3:a:wso2:identity_server:::::::: cpe:2.3:a:wso2:identity_server_as_key_manager:::::::: cpe:2.3:a:wso2:open_banking_am:::::::: cpe:2.3:a:wso2:open_banking_iam:::::::: cpe:2.3:a:wso2:traffic_manager:::::::: cpe:2.3:a:wso2:universal_gateway::::::::
Vendors & Products		Wso2 api Control Plane Wso2 api Manager Wso2 identity Server Wso2 identity Server As Key Manager Wso2 open Banking Am Wso2 open Banking Iam Wso2 traffic Manager Wso2 universal Gateway

Fri, 07 Aug 2026 10:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Wso2 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 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

Thu, 06 Aug 2026 13:30:00 +0000

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

Thu, 06 Aug 2026 08:15:00 +0000

Type	Values Removed	Values Added
Description		When an Event Publisher output adapter is configured with irrelevant properties, the affected products log these properties. This logging occurs without sufficient validation or sanitization of the property values. A malicious actor with access to the 'wso2carbon' log files could retrieve sensitive information, such as user credentials or other confidential data, that was inadvertently logged due to misconfiguration, potentially leading to unauthorized access.
Title		Sensitive Information Disclosure via Event Publisher Logging in Multiple WSO2 Products
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 Identity Server As Key Manager Open Banking Am Open Banking Iam Traffic Manager Universal Gateway 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

MITRE

Status: PUBLISHED

Assigner: WSO2

Published: 2026-08-06T07:33:20.334Z

Updated: 2026-08-06T12:32:09.382Z

Reserved: 2026-01-06T05:51:26.145Z

Link: CVE-2026-0637

Vulnrichment

Updated: 2026-08-06T12:32:06.365Z

NVD

Status : Analyzed

Published: 2026-08-06T08:16:29.453

Modified: 2026-08-12T19:29:05.020

Link: CVE-2026-0637

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-07T10:01:10Z

Weaknesses

CWE-532
Insertion of Sensitive Information into Log File

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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