EUVD-2026-77438
GHSA-w7wp-qc67-vgc8
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (apache) · only source for this CVE.
CVSS VectorVendor: apache
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Privilege escalation in Apache Syncope's internal JWT authentication (CWE-266) lets a low-privileged authenticated user obtain full administrator rights when the JWKS settings used to sign internal JWTs are disclosed. It affects Syncope 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, and 4.1.0-M0 through 4.1.2, and is fixed in 4.0.8 and 4.1.3. …
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Recommended ActionAI
Within 24 hours, inventory all Apache Syncope deployments and identify which are running vulnerable versions (3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, 4.1.0-M0 through 4.1.2); verify the security posture of JWKS configuration and review authentication logs for unauthorized admin privilege grants. …
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External POC / Exploit Code
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