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CVE-2026-73236

Apache Syncope: Cross-Realm authorization bypass in delegated administration

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-73236

Published

Incorrect Authorization vulnerability in Apache Syncope. Delegated administration security checks are based on Realm hierarchy and enforced via prefix matches. Due to incorrect implementation, two sibling Realms whose names begin with the same string cannot be correctly distinguished, resulting in incorrect authorization. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-73236

Published

Apache Syncope

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Apache Software Foundation",
                    "product": "Apache Syncope",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "3.0.0-M0",
                            "lessThanOrEqual": "3.0.16",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "4.0.0-M0",
                            "lessThanOrEqual": "4.0.7",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "4.1.0-M0",
                            "lessThanOrEqual": "4.1.2",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON