CVE-2026-1190Network attack vectorHinoki check available

Extended SAML response validity via unchecked expiration

Published Jan 26, 2026 · Updated Jan 26, 2026

Missing timestamp validation in Keycloak SAML brokering allows remote attackers to extend a response's accepted lifetime. The broker processes SubjectConfirmationData without rejecting an elapsed NotOnOrAfter value, so a delayed signed response remains valid beyond its subject-confirmation window. Exploitation requires Keycloak to act as a SAML client and a user to complete the brokered flow; signatures prevent response modification or reuse for another request.

CVSS severity3.1
Low
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Missing timestamp validation in Keycloak SAML brokering allows remote attackers to extend a response's accepted lifetime. The broker processes SubjectConfirmationData without rejecting an elapsed NotOnOrAfter value, so a delayed signed response remains valid beyond its subject-confirmation window. Exploitation requires Keycloak to act as a SAML client and a user to complete the brokered flow; signatures prevent response modification or reuse for another request.

The record

CVE
CVE-2026-1190
Published
Jan 26, 2026
Updated
Jan 26, 2026
Vendor
389 Directory Server
Product
Red Hat JBoss Enterprise Application Platform Expansion Pack
Classifications
CWE-112
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 26, 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 privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat JBoss Enterprise Application Platform Expansion PackAffected versions are unavailable in this record.
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.
389 Directory Server · Red Hat JBoss Enterprise Application PlatformAffected versions are unavailable in this record.

Published CVSS scores

3.1Red HatCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-112Missing XML Validation

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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