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Message-ID: <9e3f0dca-417b-9a19-8e9c-6940270fb1b1@apache.org>
Date: Mon, 14 Sep 2026 08:43:00 +0000
From: Francesco Chicchiriccò <ilgrosso@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-78330: Apache Syncope: Privilege escalation for admin
user via JWT authentication
Severity: moderate
Affected versions:
- Apache Syncope (org.apache.syncope.core:syncope-core-spring) 3.0.0-M0 through 3.0.16
- Apache Syncope (org.apache.syncope.core:syncope-core-spring) 4.0.0-M0 through 4.0.7
- Apache Syncope (org.apache.syncope.core:syncope-core-spring) 4.1.0-M0 through 4.1.2
Description:
Incorrect privilege assignment vulnerability in Apache Syncope.
When the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can obtain admin privileges after completing a successful authentication and obtaining a valid low-privileges JWT.
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.
Credit:
Moritz Theile (finder)
References:
https://syncope.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-78330
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