What is GHSA-v8g7-44pf-w6m4?

GHSA-v8g7-44pf-w6m4 is a security advisory published by GitHub Security Advisories with Critical severity. Authentication bypass by spoofing vulnerability in Apache Syncope. When the configured JWKS...

Which CVE IDs does GHSA-v8g7-44pf-w6m4 cover?

GHSA-v8g7-44pf-w6m4 covers the following CVE IDs: CVE-2026-87785. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-v8g7-44pf-w6m4?

GHSA-v8g7-44pf-w6m4 has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-v8g7-44pf-w6m4CriticalCVSS 9.1

Authentication bypass by spoofing vulnerability in Apache Syncope. When the configured JWKS...

Vendor

GitHub Security Advisories

Published

September 14, 2026

Last Modified

September 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-87785 →

📋 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.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-87785
https://lists.apache.org/thread/3t3om8mny7ng52q053pdzpmtdtosnqoo
http://www.openwall.com/lists/oss-security/2026/09/14/24
https://github.com/advisories/GHSA-v8g7-44pf-w6m4