CVE-2026-73579: Apache Syncope: Non-recursive Any search could skip Realms restrictions
Incorrect Authorization vulnerability in Apache Syncope.
Any search requests are transformed into SQL, Neo4J or Elasticsearch / Opensearch queries, depending on the actual deployment configuration. An important component of such transformation is the Realms filter, which ensures that the search results are matching the requester's permissions. For non-recursive search requests it is possible that such Realms filter is rendered as empty, thus voiding any restriction on requester privileges.
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Syncopeto a version that resolves this vulnerability.Fixed in 4.0.8 - Upgrade
Upgrade
Apache Syncopeto a version that resolves this vulnerability.Fixed in 4.1.3
Event History
Frequently Asked Questions
Which deployments are affected?
Apache Syncope deployments using versions 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, or 4.1.0-M0 through 4.1.2 are affected. The issue applies regardless of whether searches are transformed into SQL, Neo4J, Elasticsearch, or Opensearch queries.
What does an attacker need to do to exploit this issue?
The issue is triggered by a non-recursive Any search request. Under the vulnerable condition, the Realms filter that should limit results to the requester's permissions can be rendered empty.
What is the impact of an empty Realms filter?
An empty Realms filter removes the restriction intended to ensure search results match the requester's permissions. This can cause search results to bypass Realms-based authorization restrictions.
What versions fix the issue?
Upgrade to Apache Syncope 4.0.8 or 4.1.3. These versions are identified as fixing the vulnerability.