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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

Original advisory

cve-program · CVE-2026-91145

Published

Activiti 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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-91145

Published

Activiti

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Activiti",
                    "product": "Activiti",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:maven/org.activiti/activiti-engine",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "7.1.0.M6",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ],
                    "repo": "https://github.com/Activiti/Activiti"
                }

Original source record · Cite this exact observation · Complete original publisher JSON