CVE-2026-18214: Keycloak allows users to log in using Google accounts and can be configured to only allow users from specific Google Workspace domains. A flaw was found where the token exchange fe
Keycloak allows users to log in using Google accounts and can be configured to only allow users from specific Google Workspace domains. A flaw was found where the token exchange feature, which allows swapping a Google token for a Keycloak token, does not check these domain restrictions. This means an attacker with a valid Google account from a different domain could bypass the security check and gain access to the Keycloak realm.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-18214
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-182140.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-18214 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Keycloak
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-18218: A flaw was found in the TokenManager component of the Keycloak identity management service. Wh…nvd · 2026-07-31
- lowCVE-2026-18217: A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and …nvd · 2026-07-31
- mediumCVE-2026-18215: Keycloak provides a way to let users log in using Microsoft accounts while restricting access …nvd · 2026-07-31
- mediumCVE-2026-18211: A flaw was found in the secure-client-uris client policy executor within Keycloak core service…nvd · 2026-07-31
- lowCVE-2026-18209: A flaw was found in the keycloak-services component of Keycloak, which handles OpenID Connect …nvd · 2026-07-31
- mediumCVE-2026-18208: A flaw was found in the OIDC token introspection endpoint of the keycloak-services component. …nvd · 2026-07-31
More from NVD Recent CVEs
- unknownCVE-2026-55735: Improper Verification of Cryptographic Signature in ueberauth guardian allows an unauthenticat…2026-08-01
- unknownCVE-2026-55734: Allocation of Resources Without Limits or Throttling vulnerability in ueberauth guardian (Guar…2026-08-01
- unknownCVE-2026-55733: Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of se…2026-08-01
- unknownCVE-2026-54894: Allocation of Resources Without Limits or Throttling in ueberauth guardian allows denial of se…2026-08-01
- mediumCVE-2026-67355: guzzlehttp/guzzle versions before 7.15.1 fail to preserve host-only cookie scope, storing the …2026-08-01