CVE-2026-78336highCWE-201

CVE-2026-78336: high-severity vulnerability in Apache Syncope

Apache Syncope: OIDCC4UI provider list discloses client secrets to any authenticated user

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.4%
Insertion of sensitive information into sent data vulnerability in Apache Syncope. Any authenticated user can query for the list of available OIDC providers configured for SSO with Console and Enduser. The returned payload contains all configuration settings, including client secrets, regardless of the entitlements owned by the caller. 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
Apache Software Foundation · Apache Syncope
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