FKIE_CVE-2026-7307
Vulnerability from fkie_nvd - Published: 2026-05-19 12:16 - Updated: 2026-10-06 17:17
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/
Summary
A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | build_of_keycloak | * |
{
"affected": [
{
"affectedData": [
{
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"defaultStatus": "unaffected",
"packageName": "keycloak",
"versions": [
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"version": "0",
"versionType": "semver"
},
{
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"version": "0",
"versionType": "semver"
},
{
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}
]
},
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],
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"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "26.2.16-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
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],
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"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
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}
]
},
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{
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{
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}
]
},
{
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"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "26.4-17",
"versionType": "rpm"
}
]
},
{
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"cpes": [
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],
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"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
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{
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}
]
},
{
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"cpes": [
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],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4.12",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7.6"
],
"defaultStatus": "unaffected",
"packageName": "keycloak-services",
"product": "Red Hat Single Sign-On 7.6.13",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7.6::el7"
],
"defaultStatus": "affected",
"packageName": "rh-sso7-keycloak",
"product": "Red Hat Single Sign-On 7.6 for RHEL 7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:18.0.20-1.redhat_00001.1.el7sso",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7.6::el8"
],
"defaultStatus": "affected",
"packageName": "rh-sso7-keycloak",
"product": "Red Hat Single Sign-On 7.6 for RHEL 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:18.0.20-1.redhat_00001.1.el8sso",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7.6::el9"
],
"defaultStatus": "affected",
"packageName": "rh-sso7-keycloak",
"product": "Red Hat Single Sign-On 7.6 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:18.0.20-1.redhat_00001.1.el9sso",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:rhosemc:1.0::el8"
],
"defaultStatus": "affected",
"packageName": "rh-sso-7/sso76-openshift-rhel8",
"product": "RHEL-8 based Middleware Containers",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "7.6-85",
"versionType": "rpm"
}
]
}
],
"source": "secalert@redhat.com"
},
{
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"cpes": [
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],
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"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "26.2.16-1",
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}
]
},
{
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"cpes": [
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],
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"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
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{
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"status": "unaffected",
"version": "26.2-21",
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}
]
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],
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"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
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"status": "unaffected",
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}
]
},
{
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"cpe:/a:redhat:build_keycloak:26.2::el9"
],
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"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2.16",
"vendor": "Red Hat"
},
{
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"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
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}
]
},
{
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],
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"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
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"status": "unaffected",
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"versionType": "rpm"
}
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},
{
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"configurations": [
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}
],
"id": "CVE-2026-7307",
"lastModified": "2026-10-06T17:17:26.963",
"metrics": {
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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