CVE-2026-91197
Flowable flowable-engine through 8.0.0 XXE via ProcessDiagramLayoutFactory
- State
- Published
- Severity
- 7.1 High
- Published
- Sep 14, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 14, 2026
Description
Flowable flowable-engine through 8.0.0 contains an XML external entity injection vulnerability in ProcessDiagramLayoutFactory.parseXml() that fails to disable external entity resolution when parsing deployed BPMN resources. Attackers with process deployment privileges can embed DOCTYPE declarations with external entities in BPMN files to read arbitrary local files or trigger requests to internal network endpoints when diagram layout is computed.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-611 Improper Restriction of XML External Entity Reference
Affected Products
| Product | Versions |
|---|---|
flowable-engineflowable |
|
References
- GitHub Issue #4216issue-tracking
- https://github.com/flowable/flowable-engineproduct
- https://github.com/flowable/flowable-engine/blob/0779d68e5a3385b74d8acb8bc37901ff54513249/modules/flowable-engine/src/main/java/org/flowable/engine/impl/bpmn/diagram/ProcessDiagramLayoutFactory.java#L101-L118technical-description
- https://github.com/flowable/flowable-engine/blob/0779d68e5a3385b74d8acb8bc37901ff54513249/modules/flowable5-engine/src/main/java/org/activiti/engine/impl/bpmn/diagram/ProcessDiagramLayoutFactory.java#L97-L114technical-description
- VulnCheck Advisory: Flowable flowable-engine through 8.0.0 XXE via ProcessDiagramLayoutFactorythird-party-advisory
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