SB2026082593 - Multiple vulnerabilities in Apache Syncope

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2026-42797)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper access control in JexlContextBuilder when evaluating a crafted JEXL expression for derived schemas. A remote user can create a malicious JEXL expression to disclose sensitive information.

Exploitation requires administrative access with adequate entitlements for Derived Schemas, and the exposed data is limited to user-related security-sensitive information accessible by an administrator with sufficient entitlements for User read.

2) Improper isolation or compartmentalization (CVE-ID: CVE-2026-42782)

CWE-ID: CWE-653 - Improper isolation or compartmentalization

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to improper isolation or compartmentalization in the Groovy implementation execution path when processing administrator-supplied Groovy classes with static initializers. A remote user can create a malicious Groovy class to execute arbitrary code.

Exploitation requires administrator entitlements for Implementations.

Remediation

Install update from vendor's website.

References

• https://lists.apache.org/api/email.lua?id=h564pjncw8v8vpohblh80o605d3tdkkq
• https://lists.apache.org/api/email.lua?id=1gdnytm6t43838630fdl6pfsqoc9x84y