CVE-2020-36184Network attack vector

Remote code execution via unblocked datasource gadget

Published Jan 6, 2021 · Updated Aug 4, 2024

Polymorphic deserialization in FasterXML jackson-databind before 2.9.10.8 allows remote attackers to execute code via crafted JSON. The subtype denylist omits org.apache.tomcat.dbcp.dbcp2.datasources.PerUserPoolDataSource, so attacker-selected type metadata can instantiate that JNDI-capable gadget. Exploitation requires default typing or equivalent Object-based type metadata, the Tomcat DBCP gadget on the classpath, and an application that deserializes untrusted JSON; successful use grants code execution in the application process.

CVSS severity8.1
High
EPSS probability10.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Polymorphic deserialization in FasterXML jackson-databind before 2.9.10.8 allows remote attackers to execute code via crafted JSON. The subtype denylist omits org.apache.tomcat.dbcp.dbcp2.datasources.PerUserPoolDataSource, so attacker-selected type metadata can instantiate that JNDI-capable gadget. Exploitation requires default typing or equivalent Object-based type metadata, the Tomcat DBCP gadget on the classpath, and an application that deserializes untrusted JSON; successful use grants code execution in the application process.

The record

CVE
CVE-2020-36184
Published
Jan 6, 2021
Updated
Aug 4, 2024
Vendor
Debian
Product
Debian GNU/Linux
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Debian · Debian GNU/Linuxversion=8.0
Oracle · Oracle Financial Services Analytical Applications Infrastructureversion=8.0.6 <=8.1.0
Oracle · JD Edwards EnterpriseOne Orchestratorversion=0 <=9.2.4.2
Oracle · Oracle Retail Merchandising Systemversion=15.0
Oracle · Oracle Primavera Unifierversion=16.1; version=16.2; version=17.7 <=17.12; version=18.8; version=19.12
Oracle · Oracle WebLogic Serverversion=12.2.1.3.0 <=12.2.1.4.0
Oracle · Oracle Financial Services Institutional Performance Analyticsversion=8.0.6; version=8.0.7; version=8.1.0
Oracle · Oracle Communications Calendar Serverversion=8.0.0.4.0 <=8.0.0.5.0
Oracle · Oracle Communications Instant Messaging Serverversion=10.0.1.4.0
Oracle · Oracle AutoVue for Agile PLMversion=21.0.2
Oracle · Oracle Retail Service Backboneversion=14.1; version=15.0; version=16.0
Oracle · Oracle Communications Element Managerversion=8.2.0 <=8.2.2
Oracle · Oracle Communications Network Charging and Controlversion=12.0.0 <=12.0.3; version=6.0.1
Oracle · Oracle Enterprise Manager Base Platformversion=13.3.0.0 <=13.4.0.0
Oracle · Oracle Communications Session Route Managerversion=8.2.0 <=8.2.2
Oracle · Oracle Insurance Policy Administration J2EEversion=11.0.2.25 <11.1.0.15
Oracle · Oracle Retail Xstore Point of Serviceversion=15.0 <=19.0
Oracle · Oracle Retail Sales Auditversion=14.1
Oracle · Oracle Agile PLMversion=9.3.6
Oracle · Oracle Communications Diameter Signaling Routerversion=8.0.0 <=8.2.2
FasterXML · jackson-databindversion=0 <2.9.10.8
Oracle · Oracle Financial Services Price Creation and Discoveryversion=8.0.6 <=8.0.7
Oracle · Oracle Financial Services Retail Customer Analyticsversion=8.0.6
Oracle · Oracle Global Lifecycle Management OPatchversion=0 <=12.2.0.1.20
Oracle · Oracle Communications Evolved Communications Application Serverversion=7.1
Oracle · Oracle Banking Digital Experienceversion=18.1 <=18.3; version=19.1 <=19.2; version=20.1; version=2.4.0 <=2.9.0
NetApp · AltaVault Cloud-Integrated Storageversion=*

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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