CVE-2026-87785

published 2026-09-14

CVE-2026-87785: Authentication bypass by spoofing vulnerability in Apache Syncope. When the configured JWKS settings for internal JWT authentication are disclosed (at least…

Priority P2 67 critical 9.1 CVSS 3.1

AV N AC L PR N UI N S U C H I H A N

Authentication bypass by spoofing vulnerability in Apache Syncope.

When the configured JWKS settings for internal JWT authentication are disclosed (at least protocol and key), an attacker can spoof another user's privileges after completing a successful authentication and obtaining a valid 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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
apache_software_foundation	apache_syncope	3.0.0-M0 – 3.0.16	—
apache_software_foundation	apache_syncope	4.0.0-M0 – 4.0.7	—
apache_software_foundation	apache_syncope	4.1.0-M0 – 4.1.2	—

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CWE-290