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CVE-2026-87785 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:6.8 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

CNA: CISA-ADPCVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://www.openwall.com/lists/oss-security/2026/09/14/24	CVE	AdvisoryMailing ListRemedy
https://lists.apache.org/thread/3t3om8mny7ng52q053pdzpmtdtosnqoo	[email protected]	Mailing ListNot ApplicableVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-290	Authentication Bypass by Spoofing	[email protected]

Affected Products

Product	Versions
Apache Syncope	>= 3.0.0-M0, <= 3.0.16 (semver) >= 4.0.0-M0, <= 4.0.7 (semver) >= 4.1.0-M0, <= 4.1.2 (semver)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 4.0.8moderate effort Upgrade: 4.1.3moderate effort

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 14, 2026	CVE Modified	CISA-ADP
Sep 14, 2026	CVE Modified	CVE
Sep 14, 2026	New CVE Received	[email protected]