Vulnerability details
CVE-2026-109083
Apache Software Foundation Apache Syncope
Apache Syncope: Remote Code Execution via Flowable JUEL expression
CVSS 3.1
9.8Critical
Official description
Improper isolation or compartmentalization vulnerability in Apache Syncope. An administrator with adequate entitlements can import arbitrary BPMN process definitions via the REST API and then start the process. When a BPMN process containing a JUEL expression is imported and started, the expression is executed directly on the server, with no sandbox. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.8, from 4.1.0 through 4.1.3. Users are recommended to upgrade to version 4.0.9 / 4.1.4, which fix this issue by rejecting BPMN definitions including expression attributes.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.8Critical | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Apache Software Foundation | Apache Syncope | 3.0.0-M0 ≤ v ≤ 3.0.16 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Syncope | 4.0.0-M0 ≤ v ≤ 4.0.8 | CVEProject cvelistV5 (CNA) |
| Apache Software Foundation | Apache Syncope | 4.1.0 ≤ v ≤ 4.1.3 | CVEProject cvelistV5 (CNA) |
References and advisories
2
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Details
- Published
- 2026-11-02
- Last updated
- 2026-11-06
- State
- Published
- Assigner (CNA)
- apache
Exploit prediction (EPSS)
0.51%
Probability of exploitation in 30 days
44.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-653Improper isolation or compartmentalization