CVE-2026-0603
Unknown Unknown - Not Provided
Second-Order SQL Injection in Hibernate Risks Data Exposure and DoS

Publication date: 2026-01-23

Last updated on: 2026-03-30

Assigner: Red Hat, Inc.

Description
A flaw was found in Hibernate. A remote attacker with low privileges could exploit a second-order SQL injection vulnerability by providing specially crafted, unsanitized non-alphanumeric characters in the ID column when the InlineIdsOrClauseBuilder is used. This could lead to sensitive information disclosure, such as reading system files, and allow for data manipulation or deletion within the application's database, resulting in an application level denial of service.
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Meta Information
Published
2026-01-23
Last Modified
2026-03-30
Generated
2026-06-16
AI Q&A
2026-01-23
EPSS Evaluated
2026-06-15
NVD
CVE-2026-0603
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
hibernate hibernate-core From 1.0.0 (inc) to 5.5.0 (exc)
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.
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Executive Summary

This vulnerability is a second-order SQL injection flaw in the Hibernate ORM framework's InlineIdsOrClauseBuilder component. It occurs when user-supplied ID values containing special non-alphanumeric characters are not properly sanitized before being reused in SQL queries. An attacker with low privileges can exploit this by providing crafted IDs, leading to unauthorized actions such as reading sensitive system files or deleting data within the application's database. [1]

Impact Analysis

Exploiting this vulnerability can lead to sensitive information disclosure, such as reading parts of system files like /etc/passwd, unauthorized data manipulation or deletion within the application's database, and potentially cause an application-level denial of service. This can compromise the integrity, confidentiality, and availability of your application data. [1]

Detection Guidance

Detection involves checking if your Hibernate application uses the InlineIdsOrClauseBuilder bulk ID strategy and accepts user-supplied IDs containing non-alphanumeric characters such as {, }, :, ", ', and =. You can look for unusual SQL queries or logs showing these characters in ID fields. Additionally, running the provided proof-of-concept scripts (hibernate-poc-attack1.py and hibernate-poc-attack2.py) in a controlled test environment can help confirm vulnerability. Specific commands are not provided, but monitoring application logs for suspicious ID inputs and testing with the PoC scripts are recommended. [1]

Mitigation Strategies

Immediate mitigation steps include disabling or not using the InlineIdsOrClauseBuilder bulk ID strategy in Hibernate, sanitizing and validating all user-supplied ID inputs to exclude non-alphanumeric characters, and applying any available patches or updates from Hibernate that address this vulnerability. Restricting user input and monitoring for suspicious activity are also advised until a fix is applied. [1]

Compliance Impact

This vulnerability could lead to unauthorized disclosure and manipulation of sensitive data within the application's database, which may result in non-compliance with data protection regulations such as GDPR and HIPAA that require safeguarding personal and sensitive information. Exploitation could expose sensitive information and disrupt data integrity and availability, potentially violating these standards' requirements for confidentiality, integrity, and availability of protected data. [1]

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