CVE & CISA-KEV Catalog

CVE-2026-1190

LOW
3.1
CVSS v3
NVD

Description

A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.

CWE-112

How to fix

Remediation Available
rhbk/keycloakRed Hat / RHEL
Fixed in:rhel9@sha256:884c31d8ddfd03349a65bc76851cdf83d7cf8db0983e9e8c52a648298cd8c7eb_amd64RHSA-2026:3948
Fixed in:operator-bundle@sha256:ae13f29ccde0ddf5d96d14567177fcdfa2dd12cb29ca7793b47c857436d2a3e8_amd64RHSA-2026:3948
Fixed in:rhel9-operator@sha256:adc45a57c1cc6f816e6c0074cd9aeba6c6b323a0c708d5d11678bb49af578a6a_amd64RHSA-2026:3948
Fixed in:rhel9@sha256:b0efe038b71e19b53e41ccede51fefcd03d81e2aafd6fa0b23b5b9c8dac212fd_s390xRHSA-2026:3948
Fixed in:rhel9-operator@sha256:cbb01b2cdd4857eddc5c94a1382c11901883d0df6176593a099d01791f6b72bf_s390xRHSA-2026:3948
Fixed in:rhel9@sha256:48fa03e7e881b996085a2207878c6ab610fa770fbedf41f195d270aefb8bf9f7_arm64RHSA-2026:3948
Fixed in:rhel9-operator@sha256:2ff84fdf2ccf5ef7fb360d0b33b7369ae948b7eba84926320431adb1da23d9a7_arm64RHSA-2026:3948
Fixed in:rhel9@sha256:73cf1a2410318ef2e508c21dc5c3332d3f3658eaab7d9b0e4dadfb570c002899_ppc64leRHSA-2026:3948
rhbk/keycloakRocky
Fixed in:rhel9@sha256:884c31d8ddfd03349a65bc76851cdf83d7cf8db0983e9e8c52a648298cd8c7eb_amd64RHSA-2026:3948
Fixed in:operator-bundle@sha256:ae13f29ccde0ddf5d96d14567177fcdfa2dd12cb29ca7793b47c857436d2a3e8_amd64RHSA-2026:3948
Fixed in:rhel9-operator@sha256:adc45a57c1cc6f816e6c0074cd9aeba6c6b323a0c708d5d11678bb49af578a6a_amd64RHSA-2026:3948
Fixed in:rhel9@sha256:b0efe038b71e19b53e41ccede51fefcd03d81e2aafd6fa0b23b5b9c8dac212fd_s390xRHSA-2026:3948
Fixed in:rhel9-operator@sha256:cbb01b2cdd4857eddc5c94a1382c11901883d0df6176593a099d01791f6b72bf_s390xRHSA-2026:3948
Fixed in:rhel9@sha256:48fa03e7e881b996085a2207878c6ab610fa770fbedf41f195d270aefb8bf9f7_arm64RHSA-2026:3948
Fixed in:rhel9-operator@sha256:2ff84fdf2ccf5ef7fb360d0b33b7369ae948b7eba84926320431adb1da23d9a7_arm64RHSA-2026:3948
Fixed in:rhel9@sha256:73cf1a2410318ef2e508c21dc5c3332d3f3658eaab7d9b0e4dadfb570c002899_ppc64leRHSA-2026:3948

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityLow
AvailabilityNone

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

Exploit Intelligence

0.38%probability of exploitation in 30 days
30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Related Vulnerabilities

Other CWE-112 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2025-68493High8.140%-Fix
CVE-2022-28213High8.112%--
CVE-2021-1359Medium6.31.9%-Fix
CVE-2020-1975Medium6.81.0%-Fix
CVE-2023-40310Medium6.50.8%--
CVE-2021-27780Medium5.30.7%-Fix

Common questions

How do I fix CVE-2026-1190?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-1190 being actively exploited?

Not that we know of. CVE-2026-1190 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.38% is the estimated probability that it will be exploited in the next 30 days. That is higher than 30% of all scored CVEs.

How severe is CVE-2026-1190?

CVE-2026-1190 has a CVSS v3 base score of 3.1, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-1190 affect?

Published advisories record a fix for rhbk/keycloak (Red Hat / RHEL), rhbk/keycloak (Rocky). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-1190
CVE-2026-1190 severity badge

Markdown

[![CVE-2026-1190](https://tridentstack.com/cve/badge/CVE-2026-1190.svg)](https://tridentstack.com/cve/CVE-2026-1190)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-1190"><img src="https://tridentstack.com/cve/badge/CVE-2026-1190.svg" alt="CVE-2026-1190"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it worksStart freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-05.