CVE-2020-11977

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-15 · updated 2026-06-17

Description

In Apache Syncope 2.1.X releases prior to 2.1.7, when the Flowable extension is enabled, an administrator with workflow entitlements can use Shell Service Tasks to perform malicious operations, including but not limited to file read, file write, and code execution.

Affected products

Apache Software Foundation Apache Syncope: from 2.1.0 before 2.1.7 — fixed in 2.1.7

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Syncope 2.1.7. Check the vendor advisory for mitigations.

References

https://syncope.apache.org/security#CVE-2020-11977:_Remote_Code_Execution_via_Flowable_workflow_definition
https://syncope.apache.org/security#CVE-2020-11977:_Remote_Code_Execution_via_Flowable_workflow_definition

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