CVE-2026-7307

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Source
https://cve.org/CVERecord?id=CVE-2026-7307
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-7307.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-7307
Aliases
Downstream
CGA (24)
ECHO (1)
MINI (2)
RHSA (3)
Published
2026-05-19T10:52:24Z
Modified
2026-10-28T02:35:57Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Keycloak: keycloak: denial of service via specially crafted saml input
Details

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.

Database specific 
{
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-1286"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7307.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "fixed": "26.2.16-1"
                        },
                        {
                            "fixed": "26.2-21"
                        },
                        {
                            "fixed": "26.2-21"
                        },
                        {
                            "fixed": "26.4.12-1"
                        },
                        {
                            "fixed": "26.4-17"
                        },
                        {
                            "fixed": "26.4-17"
                        },
                        {
                            "fixed": "0:18.0.20-1.redhat_00001.1.el7sso"
                        },
                        {
                            "fixed": "0:18.0.20-1.redhat_00001.1.el8sso"
                        },
                        {
                            "fixed": "0:18.0.20-1.redhat_00001.1.el9sso"
                        },
                        {
                            "fixed": "7.6-85"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "InverseAffectedRanges"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/keycloak/keycloak

Affected ranges

Type
GIT
Repo
https://github.com/keycloak/keycloak
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
72670c0c83481ba212980174cf548aa94e41b833
Fixed
458d6ad62371bd19926264380b365471cad9c6e2
Fixed
0a402f777f8985eccbb07556e96d9b386275e048
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "26.2.16"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "26.4.12"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "26.6.2"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        }
    ]
}

Affected versions

1.*
1.0-alpha-1
1.0-alpha-1-12062013
1.0-alpha-2
1.0-alpha-3
1.0-beta-1
1.0-beta-2
1.0-beta-4
1.0-final
1.0-rc-1
1.0.0.Final
1.1.0.Beta2
1.3.0.Final
2.*
2.4.0.Test

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-7307.json"