Activiti through 7.1.0.M6 Expression Injection via Mail Task
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.
CVE-2026-91145
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-91145
Activiti
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/Activiti/Activiti",
"vendor": "Activiti",
"product": "Activiti",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "custom",
"lessThanOrEqual": "7.1.0.M6"
}
],
"packageURL": "pkg:maven/org.activiti/activiti-engine",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-91145
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #1654 · Revision 1
- Added to Heist Feed
- Publisher date