CVE-2026-91145
Activiti through 7.1.0.M6 Expression Injection via Mail Task
CVSS 4.0 7.1 HIGHCVSS 3.1 7.1 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-91145
PublishedActiviti through 7.1.0.M6 fails to validate hash-brace deferred expressions in process variables, allowing attackers to bypass expression filtering. Attackers can inject expressions beginning with #{ that are stored and later evaluated in the full Spring context when a mail task uses variable-backed body fields, enabling method invocation on application beans.
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CVE-2026-91145 · CVE overview and exploitation status
cve-program · CVE-2026-91145
- https://github.com/Activiti/Activiti/issues/5438
- https://github.com/Activiti/Activiti
- https://github.com/Activiti/Activiti/blob/7.1.0.M6/activiti-core/activiti-api-impl/activiti-api-process-runtime-impl/src/main/java/org/activiti/runtime/api/impl/ExpressionResolver.java
- https://github.com/Activiti/Activiti/blob/7.1.0.M6/activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/bpmn/behavior/MailActivityBehavior.java
- https://www.vulncheck.com/advisories/activiti-through-7.1.0-m6-expression-injection-via-mail-task
Related changes
Linked by CVE identifierNo related changes are available here.