CVE-2026-82968Network attack vectorHinoki check available

Account takeover via unbound cross-session verification proof

Published Sep 2, 2026 · Updated Sep 2, 2026

Authentication bypass in Red Hat build of Keycloak and Red Hat Single Sign-On 7 allows remote authenticated users to take over local accounts. The first-broker-login flow generates a cross-session verification proof without binding it to the specific upstream social identity being verified. Exploitation requires a different account at the same social provider, precise timing, and victim interaction during active account linking; success exposes the victim's data and permissions.

CVSS severity6.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Authentication bypass in Red Hat build of Keycloak and Red Hat Single Sign-On 7 allows remote authenticated users to take over local accounts. The first-broker-login flow generates a cross-session verification proof without binding it to the specific upstream social identity being verified. Exploitation requires a different account at the same social provider, precise timing, and victim interaction during active account linking; success exposes the victim's data and permissions.

The record

CVE
CVE-2026-82968
Published
Sep 2, 2026
Updated
Sep 2, 2026
Vendor
389 Directory Server
Product
Red Hat Single Sign-On 7
Classifications
CWE-639, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat Single Sign-On 7Affected versions are unavailable in this record.
389 Directory Server · Red Hat build of KeycloakAffected versions are unavailable in this record.

Published CVSS scores

6.4Red HatCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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