CVE-2026-87785: CWE-290 Authentication bypass by spoofing in Apache Software Foundation Apache Syncope
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.
CVE-2026-87785: CWE-290 Authentication bypass by spoofing in Apache Software Foundation Apache Syncope
Description
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 software
Apache Software Foundation
Apache Syncope
pkg:maven/Apache Software Foundation/org.apache.syncope.core:syncope-core-springRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-09-09T09:19:56.813Z
- State
- PUBLISHED
Threat ID: 6aa7d0a855bf5e2cf5ee39c6
Added to database: 09/14/2026, 10:47:04 UTC
Last updated: 09/14/2026, 10:47:04 UTC
Views: 1
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