Security Bulletin
Summary
Hibernate Validator is affected by an expression language injection vulnerability.
Vulnerability Details
CVEID: CVE-2026-93879
DESCRIPTION: Hibernate Validator could allow a remote attacker to cause a denial of service due to uncontrolled resource consumption resulting from improper escaping of user-controlled data in Expression Language (EL) expressions.
CWE: CWE-400: Uncontrolled Resource Consumption
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Hibernate Validator | 5.4.1.Final - 6.2.5.Final |
| Hibernate Validator | 7.0.0.Alpha1 - 7.0.5.Final |
| Hibernate Validator | 8.0.0.Alpha1 - 8.0.5.Final |
| Hibernate Validator | 9.0.0.Beta2 - 9.0.1.Final |
| Hibernate Validator | 9.1.0.Alpha1 - 9.1.4.Final |
Remediation/Fixes
It is strongly recommended to address the vulnerability by upgrading to the latest version.
Upgrade to 6.2.6.Final, 7.0.6.Final, 8.0.6.Final, 9.0.2.Final, 9.1.5.Final or later.
For more information see: https://github.com/hibernate/hibernate-validator/security/advisories/GHSA-gv36-fx3r-29p5
Workarounds and Mitigations
The safe alternative for custom validators is to use `addExpressionVariable` instead of `addMessageParameter` when injecting user-controlled values into EL-enabled messages, as expression variables are bound as typed objects and are never re-parsed as EL expressions.
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References
Acknowledgement
Change History
21 Oct 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
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Document Location
Worldwide
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Document Information
Modified date:
21 October 2026
Initial Publish date:
21 October 2026
UID
ibm17293301