CVE-2026-42555: Valtimo has SpEL injection via StandardEvaluationContext that allows Remote Code Execution by admin users

May 6, 2026

Multiple classes evaluate Spring Expression Language (SpEL) expressions from user-supplied input using StandardEvaluationContext, which provides unrestricted access to Java types and methods. An authenticated user with the ADMIN role can achieve Remote Code Execution and credential exfiltration.

References

github.com/advisories/GHSA-j7j9-5253-f7vh
github.com/valtimo-platform/valtimo
github.com/valtimo-platform/valtimo/security/advisories/GHSA-j7j9-5253-f7vh
nvd.nist.gov/vuln/detail/CVE-2026-42555

Code Behaviors & Features

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