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Fencer Vulns
medium 4.4

CVE-2026-18800 json

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

published 2026-11-02 7 d ago modified 2026-11-02 6 d ago also EUVD-2026-115114

cvss
4.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits
0
none known

Summary

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.

Patch / fix

  • WSO2 WSO2 API Manager 3.1.0.357, 3.2.0.465, 3.2.1.84, 4.1.0.249, 4.2.0.189, 4.3.0.100, 4.4.0.64, 4.5.0.49, 4.6.0.13
  • WSO2 WSO2 Traffic Manager 4.5.0.48, 4.6.0.13
  • WSO2 WSO2 API Control Plane 4.5.0.50, 4.6.0.14
  • WSO2 WSO2 Universal Gateway 4.5.0.49, 4.6.0.13
  • WSO2 WSO2 Identity Server 5.10.0.386, 5.11.0.433, 6.0.0.260, 6.1.0.261, 7.0.0.139, 7.1.0.47, 7.2.0.8
  • WSO2 WSO2 Identity Server as Key Manager 5.10.0.377
  • WSO2 WSO2 Open Banking IAM 2.0.0.426
  • WSO2 WSO2 Open Banking AM 2.0.0.406
  • WSO2 WSO2 Carbon Event Publisher Core 5.2.65, 5.3.28

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
6 d ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

  • WSO2 WSO2 API Manager
  • WSO2 WSO2 Traffic Manager
  • WSO2 WSO2 API Control Plane
  • WSO2 WSO2 Universal Gateway
  • WSO2 WSO2 Identity Server
  • WSO2 WSO2 Identity Server as Key Manager
  • WSO2 WSO2 Open Banking IAM
  • WSO2 WSO2 Open Banking AM
  • WSO2 WSO2 Carbon Event Publisher Core

Classification

Weakness
  • CWE-532 Insertion of Sensitive Information into Log File

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.