Security readout for executives and security teams
Plain-English summary
An authenticated user may be able to see another user’s sensitive data or alter system data because certain WSO2 integrations do not reliably isolate message properties between invocations. Impact depends on whether the vulnerable Class Mediator behavior is used. No availability impact is identified.
Executive priority
Prioritize affected internet-facing or multi-tenant integrations handling sensitive or business-critical data. Treat as a scheduled, prompt remediation rather than an emergency unless suspicious activity or exposed high-value data is found. Require inventory confirmation because impact is configuration-dependent.
Technical view
The Class Mediator inadequately validates or sanitizes messageContext properties used for dynamic values, potentially allowing cross-invocation disclosure or modification. The issue is classified as CWE-20. CVSS 3.1 is 6.8: network-accessible, high complexity, low privileges, no user interaction, with high confidentiality and integrity impact.
Likely exposure
Exposure requires an authenticated user and a configuration where Class Mediator dynamic values use messageContext properties. Named WSO2 Micro Integrator, Enterprise Integrator, API Manager, and WSO2-Synapse releases may require review. The supplied data leaves the default status of WSO2-Synapse versions unknown.
Exploitation context
CISA KEV status is false, and the supplied sources do not report active exploitation. Exploitation is assessed as high complexity and requires low privileges, but no user interaction. Absence from KEV does not prove the vulnerability is not being exploited.
Researcher notes
The supplied bundle identifies affected releases but does not name a fixed version or product-specific workaround. It also marks unlisted versions as unaffected for several products while leaving WSO2-Synapse’s default status unknown. Validate package provenance and consult the vendor advisory before concluding exposure or remediation completeness.
Mitigation direction
- Inventory deployed WSO2 products and compare exact versions with the vendor advisory.
- Check WSO2 guidance for corrected releases, then upgrade using the vendor-supported remediation path.
- Restrict authenticated access and minimize privileges until remediation is completed.
- Review Class Mediator configurations that populate dynamic values from messageContext properties.
- Investigate and contain suspected cross-user disclosure or unauthorized data modification.
Validation and detection
- Record exact WSO2 product and WSO2-Synapse dependency versions in each environment.
- Identify Class Mediator configurations using messageContext properties for dynamic values.
- Confirm exposed users have only the minimum required roles and permissions.
- Review relevant logs for unexpected cross-invocation access or data changes.
- After remediation, verify installed versions against current WSO2 guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2024-6541 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N1.65.2WSO2Vulnerability scoring details
Base CVSS 3.1 score
6.8MediumVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3520/CVE reference, WSO2 · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.