Public vulnerability disclosure

CVE-2026-93879

Hibernate Validator is affected by an expression language injection vulnerability

publishedCWE-400

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.

Technical severity7.5 highCVSS 3.1 · CNA: ibm
Published2026-11-08Source updated 2026-11-08
Collected2026-11-081 attributed source

Fixes and workarounds

Fix

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

Source: CNA: ibm

Workaround

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.

Source: CNA: ibm

Fix

The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.

Source: CNA: ibm

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
Hibernate Validator
IBM
≥ 5.4.1.Final; ≤ 6.2.5.Final (affected, semver)
≥ 7.0.0.Alpha1; ≤ 7.0.5.Final (affected, semver)
≥ 8.0.0.Alpha1; ≤ 8.0.5.Final (affected, semver)
≥ 9.0.0.Beta2; ≤ 9.0.1.Final (affected, semver)
≥ 9.1.0.Alpha1; ≤ 9.1.4.Final (affected, semver)
CNA: ibm

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 7.5
high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCNA: ibm

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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