Apache Syncope: RCE via Flowable JUEL

Apache Syncope

Apache Syncope vulnerable to remote code execution via Flowable JUEL expression

Do this now

Check the Apache Syncope advisory for a fix and restrict access to Flowable JUEL expression handling until patched.

Still cooking for Apache Syncope.

First seen: 2 Nov 2026
Last update: 2 Nov 2026, 19:19 UTC
Identifiers: CVE-2026-109083
Source: news
On the menu as: Java

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Apache Syncope: RCE via Flowable JUEL
Severity: unknown. Patch status: fix status unknown.
Affected: Apache Syncope
Ids: CVE-2026-109083

Apache Syncope vulnerable to remote code execution via Flowable JUEL expression

## Steps
1. Search the repo, its CI and infra config for Apache Syncope. If present, report the version in use and whether it's affected.
2. Apache Syncope 4.1.x, 4.0.x, 3.0.x: the CVE record names no fix; check the vendor advisory before assuming there is none. Until one ships: restrict network access to it.

## Fix by release line
| Line | State | Fix | Until then |
|---|---|---|---|
| Apache Syncope 3.0 to 4.1 (3 lines) | not named in the CVE record | check the vendor advisory | restrict network access to it |

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-109083") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://seclists.org/oss-sec/2026/q4/470
https://pwned.coffee/i/apache-syncope-rce-via-flowable-juel-cve-2026-109083

Timeline

2 Nov 2026, 19:19 UTC
Fix status: no fix yet → unknown.
2 Nov 2026
First reported.

Receipt

Exploitation: No known exploitation
Checked by hand “Apache Syncope is a Java identity manager.” source
Fix by release line: Product Affected Fixed in Source
Apache Syncope 3.0.0-M0 to 4.1.0 (3 lines) fix not named in the CVE record: see vendor advisory CVE record (CNA) checked 3 Nov
Score: No CVSS published yet: severity unknown.
Last checked: 4 Nov 2026, 08:18 UTC

Product	Affected	Fixed in	Source
Apache Syncope	3.0.0-M0 to 4.1.0 (3 lines)	fix not named in the CVE record: see vendor advisory	CVE record (CNA) checked 3 Nov

Sources: KEV – CVE record ✓ Vendor ✓

Sources

seclists.org: CVE-2026-109083: Apache Syncope: Remote Code Execution via Flowable JUEL expression

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