CVE-2020-11620

HIGH

jackson-databind 2.9.0-2.9.10.3 - Deserialization of Untrusted Data via commons-jelly Gadget

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2020-11620. PoCs published by dawetmaster, andikahilmy.

AI-analyzed exploit summary This repository contains a vulnerable version of Jackson Databind (2.9.0) that demonstrates CVE-2020-11620, a deserialization vulnerability. The included source code and build configuration allow for testing and exploitation of the flaw.

Description

FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to org.apache.commons.jelly.impl.Embedded (aka commons-jelly).

Exploits (2)

nomisec WORKING POC
by dawetmaster · poc
https://github.com/dawetmaster/CVE-2020-11620-jackson-databind-vulnerable

This repository contains a vulnerable version of Jackson Databind (2.9.0) that demonstrates CVE-2020-11620, a deserialization vulnerability. The included source code and build configuration allow for testing and exploitation of the flaw.

Classification
Working Poc 95%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Jackson Databind 2.9.0
No auth needed
Prerequisites: Java environment · Jackson Databind 2.9.0 dependency
devstral-2 · analyzed Mar 14, 2026 Full analysis →
nomisec WORKING POC
by andikahilmy · poc
https://github.com/andikahilmy/CVE-2020-11620-jackson-databind-vulnerable

This repository contains a vulnerable version of Jackson Databind (2.9.0) that demonstrates CVE-2020-11620, a deserialization vulnerability. The included source code and build configuration allow for testing and exploitation of the flaw.

Classification
Working Poc 90%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Jackson Databind 2.9.0
No auth needed
Prerequisites: Java environment · Jackson Databind 2.9.0 dependency
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (8)

Core 8
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/04/msg00012.html
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujul2020.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20200511-0004/
Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/FasterXML/jackson-databind/issues/2682
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2020.html
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2021.html

Scores

CVSS v3 8.1
EPSS 0.0212
EPSS Percentile 84.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-502
Status published
Products (31)
com.fasterxml.jackson.core/jackson-databind 2.9.0 - 2.9.10.4Maven
debian/debian_linux 8.0
fasterxml/jackson-databind 2.9.0 - 2.9.10.4
netapp/active_iq_unified_manager 7.3 (2 CPE variants)
netapp/active_iq_unified_manager 9.5
netapp/steelstore_cloud_integrated_storage
oracle/banking_platform 2.4.0 - 2.9.0
oracle/communications_contacts_server 8.0.0.4.0
oracle/communications_evolved_communications_application_server 7.1
oracle/communications_instant_messaging_server 10.0.1.4.0
... and 21 more
Published Apr 07, 2020
Tracked Since Feb 18, 2026