Information Disclosure and Integrity Violation via Improper Message Context Handling in Multiple WSO2 Products

Description

The Class Mediator fails to correctly validate or sanitize `messageContext` properties when they are used to populate dynamic values. This allows authenticated users to potentially access or modify data across different system invocations that should be isolated. This weakness can lead to the disclosure of sensitive information belonging to other users or the unintended modification of system data by authenticated users. The exact impact depends on how `messageContext` properties are utilized within the affected WSO2 products.

Scores

EPSS (exploitation in 30 days)

0.34% · top 72% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.

Weakness

• CWE-20: Improper Input Validation (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• WSO2 · WSO2 Micro Integrator

  • unknown < 1.2.0
  • affected 1.2.0 – < 1.2.0.163
  • affected 4.1.0 – < 4.1.0.103
  • affected 4.3.0 – < 4.3.0.7

• WSO2 · WSO2 Enterprise Integrator

  • unknown < 6.6.0
  • affected 6.6.0 – < 6.6.0.205

• WSO2 · WSO2 API Manager

  • unknown < 3.2.0
  • affected 3.2.0 – < 3.2.0.394
  • affected 3.2.1 – < 3.2.1.21
  • affected 4.0.0 – < 4.0.0.311
  • affected 4.1.0 – < 4.1.0.167
  • affected 4.2.0 – < 4.2.0.110
  • affected 4.3.0 – < 4.3.0.24

• WSO2 · WSO2-Synapse

  • affected 2.1.7.wso2v182 – < 2.1.7.wso2v182_93
  • affected 2.1.7.wso2v143 – < 2.1.7.wso2v143_119
  • affected 2.1.7.wso2v183 – < 2.1.7.wso2v183_62
  • affected 2.1.7.wso2v319 – < 2.1.7.wso2v319_7
  • affected 2.1.7.wso2v227 – < 2.1.7.wso2v227_88
  • affected 2.1.7.wso2v271 – < 2.1.7.wso2v271_60
  • affected 4.0.0.wso2v119 – < 4.0.0.wso2v119_3
  • affected 4.0.0.wso2v105 – < 4.0.0.wso2v105_3
  • affected 4.0.0.wso2v20 – < 4.0.0.wso2v20_63
  • unaffected v4.0.0-wso2v121 – ≤ v4.0.0-wso2v*

What to do

Solution: Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3520/#solution https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3520/#solution

References (1)

• https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3520/ (opens in a new tab)vendor-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-6541](https://trackcve.app/badge/CVE-2024-6541.svg)](https://trackcve.app/cve/CVE-2024-6541)

Record last updated 7 Aug 2026, 17:45 UTC.