CVE-2026-77051
Deferred Deferred - Pending Action

SQL Injection in Apache Syncope

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: Apache Software Foundation

Description
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache Syncope. An administrator with adequate entitlements can achieve execution of arbitrary SQL via stacked queries, leveraging unsanitized entityKey and opEvent parameters. 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.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-15
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-77051
EUVD
EUVD-2026-77459

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
apache syncope From 3.0.0-M0 (inc) to 3.0.16 (inc)
apache syncope From 4.0.0-M0 (inc) to 4.0.7 (inc)
apache syncope 4.0.8
apache syncope 4.1.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

This is an SQL Injection vulnerability in Apache Syncope. It allows an administrator with sufficient privileges to execute arbitrary SQL commands by using unsanitized parameters like entityKey and opEvent. This is possible due to improper neutralization of special elements in SQL commands.

Detection Guidance

Detecting SQL injection vulnerabilities like CVE-2026-77051 requires monitoring for unusual SQL queries or parameter tampering. Check Apache Syncope logs for suspicious stacked queries or unsanitized inputs in entityKey and opEvent parameters. Use tools like SQLMap to test for injection points in web interfaces.

Impact Analysis

An attacker with admin access could manipulate SQL queries to access, modify, or delete sensitive data in the database. This could lead to unauthorized data exposure, data corruption, or complete system compromise depending on the database permissions.

Compliance Impact

This vulnerability could lead to violations of GDPR (data breaches), HIPAA (unauthorized access to health data), and other regulations requiring strict data protection. Non-compliance may result in legal penalties, fines, and reputational damage.

Mitigation Strategies

Upgrade Apache Syncope to version 4.0.8, 4.1.3, or later to patch the vulnerability. If upgrading is not immediately possible, restrict access to administrative functions and sanitize all user inputs, especially entityKey and opEvent parameters, to prevent SQL injection.

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