CVE-2026-73579 Apache Syncope: Non-recursive Any search could skip Realms restrictions
Attackers can bypass realm restrictions in non-recursive searches to access unauthorized data in Apache Syncope.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73579?
CVE-2026-73579 is a critical missing authorization vulnerability in Apache Syncope, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-73579?
How do I fix CVE-2026-73579?
No fix has been published for CVE-2026-73579 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73579 being exploited?
There is no known exploitation of CVE-2026-73579 in the wild and no public exploit code.
Sources
Also known as GHSA-q5mc-rwjh-9x5q.