CVE-2026-87785

Summary

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

VendorProductVersion RangeStatus
Apache Software FoundationApache Syncope3.0.0-M0 <= 3.0.16affected
Apache Software FoundationApache Syncope4.0.0-M0 <= 4.0.7affected
Apache Software FoundationApache Syncope4.1.0-M0 <= 4.1.2affected

Weaknesses

  • CWE-290: CWE-290 Authentication bypass by spoofing

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

References