EUVD-2026-78206
GHSA-8x6x-vw5h-q563
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable via BPMN upload API, PR:L reflects required deployment privileges, confidentiality-only impact as XXE yields file reads and SSRF probing with no integrity or availability effect.
Primary rating from Vendor (vulncheck).
CVSS VectorVendor: vulncheck
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
XML External Entity injection in Flowable flowable-engine through 8.0.0 allows authenticated users holding process deployment privileges to exfiltrate arbitrary local files or perform server-side request forgery against internal network endpoints. The vulnerability resides in ProcessDiagramLayoutFactory.parseXml(), which processes user-supplied BPMN XML without disabling external entity resolution, and is present in both the main flowable-engine module and the legacy flowable5-engine (Activiti-derived) module. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated account with process deployment privileges within the Flowable engine (corresponding to PR:L in the CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 7.1 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N) is well-calibrated for this class of vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patched version has been independently confirmed from the available reference data; the references link to source code lines and a GitHub issue (#4216) rather than a tagged fix release or security advisory with a remediation version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Flowable deployments running version 8.0.0 or earlier and audit which users hold process deployment privileges. …
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External POC / Exploit Code
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