CVE-2026-62183
CRITICALApache Syncope: User self-service privilege escalation
Title source: cnaExploitation Summary
EIP tracks 1 public exploit for CVE-2026-62183. PoCs published by NicPWNs.
AI-analyzed exploit summary This PoC demonstrates a privilege escalation vulnerability (CVE-2026-62183) in Apache Syncope where an authenticated low-privilege user can self-assign administrative roles via the `PATCH /users/self/{key}` endpoint, bypassing authorization checks. The exploit uses legitimate API calls to escalate privileges from a non-privileged user to a 'User manager' role.
Description
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.
Exploits (1)
This PoC demonstrates a privilege escalation vulnerability (CVE-2026-62183) in Apache Syncope where an authenticated low-privilege user can self-assign administrative roles via the `PATCH /users/self/{key}` endpoint, bypassing authorization checks. The exploit uses legitimate API calls to escalate privileges from a non-privileged user to a 'User manager' role.
References (2)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H