CVE-2026-23794: Apache Syncope: Reflected XSS on Enduser Login

February 3, 2026

Reflected XSS in Apache Syncope’s Enduser Login page.

An attacker that tricks a legitimate user into clicking a malicious link and logging in to Syncope Enduser could steal that user’s credentials.

This issue affects Apache Syncope: from 3.0 through 3.0.15, from 4.0 through 4.0.3.

Users are recommended to upgrade to version 3.0.16 / 4.0.4, which fix this issue.

References

github.com/advisories/GHSA-v84m-gfw5-hm2w
github.com/apache/syncope
lists.apache.org/thread/7h30ghqdsf3spl3h7gdmscxofrm8ygjo
nvd.nist.gov/vuln/detail/CVE-2026-23794

Code Behaviors & Features

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