Privilege escalation in Apache Syncope
CVE-2026-62183
Improper Privilege Management vulnerability in Apache Syncope. When: * the all-Java user workflow adapter is configured, or * the Flowable user workflow adapter is configured, bearing a BPMN definition not requiring admin approval for user self registration of self update requests the following scenario could happen. A REST API call can allow the user to grant themselves one or more of defined Roles, thus gaining their Entitlements and becoming in fact an administrator; the actual Entitlements gained depend on the Roles that are effectively defined on the specific Syncope deployment. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1. Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue.
Vulnerability class: Privilege Escalation
EPSS: 0.007 (50.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Syncope
- Apache Software Foundation Syncope — versions 3.0.0-M0, 4.0.0-M0, 4.1.0-M0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-62183?
- CVE-2026-62183 is a critical-severity vulnerability in Apache Syncope, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2026-07-20.
- How severe is CVE-2026-62183?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-62183 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.