Vulnerability Intelligence Report
Activiti through 7.1.0.M6 Expression Injection via Mail Task
CVE-2026-91145
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.
No Active Exploit Signals
CVSS Base Score
7.1
HIGH
EPSS Probability:0.42%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-917 ↗Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Activiti | Activiti | 0 <= 7.1.0.M6 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.422%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-09-14T20:35:44 |
| Published | 2026-09-14T21:45:45 |
| Patch Date | 2026-06-13 |
| Last Updated | 2026-09-24T14:22:12 |
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