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CVE-2026-73579

9.8 · CRITICAL

Incorrect Authorization vulnerability in Apache Syncope.

Published Sep 14, 2026CWE-863EPSS 0.51%

Overview

CVE-2026-73579 is a critical-severity vulnerability. It was published on September 14, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.apache.org/thread/ykwnkrt2b43d0wm1phh94pqqyjb6qyhxRefwww.openwall.com/lists/oss-security/2026/09/14/10

How CyberStrike helps

Frequently asked questions

What is CVE-2026-73579?

CVE-2026-73579 is a critical-severity vulnerability. It was published on September 14, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-73579?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-73579?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-73579?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-73579 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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