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CVE-2026-109083

Apache Syncope: Remote Code Execution via Flowable JUEL expression

CVSS score

—

EPSS probability

—

Risk score

—

Published

2 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

Remote Code Execution Vulnerability in Apache Syncope

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A remote code execution vulnerability exists in Apache Syncope where BPMN process definitions imported via the REST API allow JUEL expressions to be executed directly on the server without a sandbox (S0). The flaw is triggered when an administrator with adequate entitlements imports and starts a process containing a JUEL expression (S0).

Why does it matter?

This vulnerability allows authenticated administrative users to execute code directly on the affected server (S0). Without proper mitigation, system integrity can be compromised (S0).

What should be done?

  • Upgrade to version 4.0.9 or 4.1.4 (S0)
  • Follow vendor advisories and updates (S0)
Chain of evidence and sources2 verified claims

Yeterli yetkiye sahip yöneticiler, REST API üzerinden JUEL ifadeleri içeren BPMN süreçlerini içe aktararak kod çalıştırabilir (S0).

S0 · daybreach-canonical

Zafiyet 3.0.0-M0 ila 3.0.16, 4.0.0-M0 ila 4.0.8 ve 4.1.0 ila 4.1.3 arasındaki Apache Syncope sürümlerini etkilemektedir (S0).

S0 · daybreach-canonical
Show the technical text from the sources

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.

CWE: CWE-653

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-109083 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Apache Software FoundationApache Syncope View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
The sources have not yet published a verified CVSS metric.

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-109083 is associated with the following CWEs:

CWE-653: Common Weakness Enumeration Entry CWE-653

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-109083 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Official Sources and Advisories

https://lists.apache.org/thread.html/zmzxzxv7wjzn071jgn069y2rqjpcrt3svendor-advisory

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Apache Software Foundation

Weakness Type (CWE & CAPEC)

CWE-653

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CVE-2026-109083 · Apache Syncope: Remote Code Execution via…