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Fencer Intel
critical 9.8

CVE-2020-9546 json

jackson-databind mishandles the interaction between serialization gadgets and typing

published 6y ago modified last mo. also GHSA-5p34-5m6p-p58g , EUVD-2020-0366

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to org.apache.hadoop.shaded.com.zaxxer.hikari.HikariConfig (aka shaded hikari-config).

Patch / fix

  • maven com.fasterxml.jackson.core:jackson-databind 2.9.10.4
  • fasterxml jackson-databind 2.7.9.7, 2.8.11.6, 2.9.10.4
  • oracle global_lifecycle_management_opatch 12.2.0.1.20
  • oracle jd_edwards_enterpriseone_orchestrator 9.2.4.2
  • oracle jd_edwards_enterpriseone_tools 9.2.4.2
  • jackson-databind Debian 14, Debian 13, Debian 12 2.11.1-1

debian advisories DEBIAN-CVE-2020-9546

  • jackson-databind Ubuntu Pro 16.04 LTS 2.4.2-3ubuntu0.1~esm2

ubuntu advisories UBUNTU-CVE-2020-9546

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • eap7-txw2 jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-xsom jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-rngom jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-wss4j jboss enterprise application platform 7.3 2.2.5-1.redhat_00001.1.el7eap
  • eap7-jandex jboss enterprise application platform 7.3 2.1.2-1.Final_redhat_00001.1.el7eap
  • eap7-jasypt jboss enterprise application platform 7.3 1.9.3-1.redhat_00001.1.el7eap
  • eap7-wildfly jboss enterprise application platform 7.3 7.3.1-5.GA_redhat_00003.1.el7eap
  • eap7-jaxb-jxc jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap

red hat advisories RHSA-2025:1746RHSA-2020:2512RHSA-2020:2511RHSA-2020:2513RHSA-2020:4366RHSA-2020:3639

  • xsom AlmaLinux 8 0-19.20110809svn.module_el8.5.0+2577+9e95fe00
  • slf4j AlmaLinux 8 1.7.25-4.module_el8.5.0+2577+9e95fe00
  • stax-ex AlmaLinux 8 1.7.7-8.module_el8.5.0+2577+9e95fe00
  • velocity AlmaLinux 8 1.7-24.module_el8.5.0+2577+9e95fe00
  • xalan-j2 AlmaLinux 8 2.7.1-38.module_el8.5.0+2577+9e95fe00
  • javassist AlmaLinux 8 3.18.1-8.module_el8.5.0+2577+9e95fe00
  • xerces-j2 AlmaLinux 8 2.11.0-34.module_el8.5.0+2577+9e95fe00
  • python3-nss AlmaLinux 8 1.0.1-10.module_el8.5.0+2577+9e95fe00.alma

almalinux advisories ALSA-2020:1644

  • xsom Rocky Linux 8 0-19.20110809svn.module+el8.3.0+53+ea062990
  • slf4j Rocky Linux 8 1.7.25-4.module+el8.5.0+697+f586bb30
  • slf4j Rocky Linux 8 1.7.25-4.module+el8.3.0+74+855e3f5d
  • slf4j Rocky Linux 8 1.7.25-4.module+el8.3.0+133+b8b54b58
  • stax-ex Rocky Linux 8 1.7.7-8.module+el8.3.0+53+ea062990
  • bea-stax Rocky Linux 8 1.2.0-16.module+el8.3.0+53+ea062990
  • resteasy Rocky Linux 8 3.0.26-3.module+el8.3.0+53+ea062990
  • velocity Rocky Linux 8 1.7-24.module+el8.3.0+53+ea062990

rocky linux advisories RLSA-2020:1644

Is CVE-2020-9546 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-9546 updated cvss 8.1

jackson-databind: Serialization gadgets in shaded-hikari-config

  • Red Hat JBoss A-MQ 6 jackson-databind Red Hat JBoss Enterprise Application Platform Continuous Delivery jackson-databind Red Hat JBoss Fuse 6 jackson-databind Red Hat Mobile Application Platform 4 jackson-databind
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Application Runtimes jackson-databind
    affected: no fix available
  • Red Hat OpenShift Container Platform 3.11 openshift3/ose-logging-elasticsearch5 Red Hat OpenShift Container Platform 4 openshift4/ose-logging-elasticsearch5
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 10 (Newton) opendaylight
    affected: no fix planned “Out of support scope”
  • Red Hat OpenStack Platform 13 (Queens) opendaylight Red Hat Software Collections rh-maven35-jackson-databind, rh-maven35-jackson-databind-javadoc
    affected: no fix planned “Will not fix”
  • Red Hat Data Grid 7.3.7
    fixed: vendor fix RHSA-2020:3779
  • Red Hat Decision Manager 7
    fixed: vendor fix RHSA-2020:3196
  • Red Hat Enterprise Linux AppStream (v. 8) jss 4.6.2-4.module+el8.2.0+6123+b4678599, slf4j 1.7.25-4.module+el8.1.0+3366+6dfb954c, pki-ca 10.8.3-1.module+el8.2.0+5925+bad5981a, stax-ex 1.7.7-8.module+el8.1.0+3366+6dfb954c, velocity 1.7-24.module+el8.1.0+3366+6dfb954c, ldapjdk 4.21.0-2.module+el8.2.0+4573+c3c38c7b, +43 more
    fixed: vendor fix RHSA-2020:1644
show 19 more
  • Red Hat Fuse 7.7.0
    fixed: vendor fix RHSA-2020:3192
  • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7-dom4j 2.1.3-1.redhat_00001.1.el6eap, eap7-wildfly 7.2.9-4.GA_redhat_00003.1.el6eap, eap7-resteasy 3.6.1-10.SP9_redhat_00001.1.el6eap, eap7-undertow 2.0.30-4.SP4_redhat_00001.1.el6eap, eap7-weld-ejb 3.0.6-4.Final_redhat_00004.1.el6eap, eap7-weld-jta 3.0.6-4.Final_redhat_00004.1.el6eap, +83 more
    fixed: vendor fix RHSA-2020:3637
  • Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7-dom4j 2.1.3-1.redhat_00001.1.el7eap, eap7-wildfly 7.2.9-4.GA_redhat_00003.1.el7eap, eap7-resteasy 3.6.1-10.SP9_redhat_00001.1.el7eap, eap7-undertow 2.0.30-4.SP4_redhat_00001.1.el7eap, eap7-weld-ejb 3.0.6-4.Final_redhat_00004.1.el7eap, eap7-weld-jta 3.0.6-4.Final_redhat_00004.1.el7eap, +85 more
    fixed: vendor fix RHSA-2020:3638
  • Red Hat JBoss EAP 7.2 for RHEL 8 eap7-dom4j 2.1.3-1.redhat_00001.1.el8eap, eap7-wildfly 7.2.9-4.GA_redhat_00003.1.el8eap, eap7-resteasy 3.6.1-10.SP9_redhat_00001.1.el8eap, eap7-undertow 2.0.30-4.SP4_redhat_00001.1.el8eap, eap7-weld-ejb 3.0.6-4.Final_redhat_00004.1.el8eap, eap7-weld-jta 3.0.6-4.Final_redhat_00004.1.el8eap, +83 more
    fixed: vendor fix RHSA-2020:3639
  • Red Hat JBoss EAP 7.3 for BaseOS-8 eap7-wss4j 2.2.5-1.redhat_00001.1.el8eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el8eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el8eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el8eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el8eap, eap7-rngom 2.3.3-4.b02_redhat_00001.1.el8eap, +194 more
    fixed: vendor fix RHSA-2020:2513
  • Red Hat JBoss EAP 7.3 for RHEL 6 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el6eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el6eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el6eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el6eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el6eap, eap7-rngom 2.3.3-4.b02_redhat_00001.1.el6eap, +194 more
    fixed: vendor fix RHSA-2020:2511
  • Red Hat JBoss EAP 7.3 for RHEL 7 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el7eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el7eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el7eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el7eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el7eap, eap7-rngom 2.3.3-4.b02_redhat_00001.1.el7eap, +196 more
    fixed: vendor fix RHSA-2020:2512
  • Red Hat JBoss Enterprise Application Platform 7
    fixed: vendor fix RHSA-2020:2515
  • Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-resteasy 3.0.27-1.Final_redhat_00001.1.ep7.el7, eap7-resteasy-cdi 3.0.27-1.Final_redhat_00001.1.ep7.el7, eap7-resteasy-jaxrs 3.0.27-1.Final_redhat_00001.1.ep7.el7, eap7-resteasy-jsapi 3.0.27-1.Final_redhat_00001.1.ep7.el7, eap7-resteasy-client 3.0.27-1.Final_redhat_00001.1.ep7.el7, eap7-resteasy-crypto 3.0.27-1.Final_redhat_00001.1.ep7.el7, +12 more
    fixed: vendor fix RHSA-2025:1746
  • Red Hat Process Automation 7
    fixed: vendor fix RHSA-2020:3197
  • Red Hat Satellite 6.6 satellite 6.6.3-1.el7sat, candlepin 2.6.16-1.el7sat, foreman 1.22.0.39-2.el7sat, satellite-cli 6.6.3-1.el7sat, foreman-cli 1.22.0.39-2.el7sat, foreman-ec2 1.22.0.39-2.el7sat, +17 more
    fixed: vendor fix RHBA-2020:1494
  • Red Hat Satellite 6.7 satellite 6.7.2-1.el7sat, candlepin 2.9.28-1.el7sat, foreman 1.24.1.24-1.el7sat, pulp-rpm 2.21.0.6-1.el7sat, satellite-cli 6.7.2-1.el7sat, foreman-cli 1.24.1.24-1.el7sat, +27 more
    fixed: vendor fix RHBA-2020:3255
  • Red Hat Satellite 6.8 tfm 6.1-1.el7sat, kobo 0.5.1-1.el7sat, pulp 2.21.3-1.el7sat, gofer 2.12.5-7.el7sat, receptor 0.6.3-1.el7ar, future 0.16.0-11.el7sat, +488 more
    fixed: vendor fix RHSA-2020:4366
  • Red Hat Satellite Capsule 6.6 satellite 6.6.3-1.el7sat, foreman 1.22.0.39-2.el7sat, satellite-common 6.6.3-1.el7sat, satellite-capsule 6.6.3-1.el7sat, satellite-debug-tools 6.6.3-1.el7sat
    fixed: vendor fix RHBA-2020:1494
  • Red Hat Satellite Capsule 6.7 satellite 6.7.2-1.el7sat, foreman 1.24.1.24-1.el7sat, pulp-rpm 2.21.0.6-1.el7sat, satellite-common 6.7.2-1.el7sat, satellite-capsule 6.7.2-1.el7sat, pulp-rpm-plugins 2.21.0.6-1.el7sat, +6 more
    fixed: vendor fix RHBA-2020:3255
  • Red Hat Satellite Capsule 6.8 tfm 6.1-1.el7sat, kobo 0.5.1-1.el7sat, pulp 2.21.3-1.el7sat, gofer 2.12.5-7.el7sat, future 0.16.0-11.el7sat, katello 3.16.0-1.el7sat, +232 more
    fixed: vendor fix RHSA-2020:4366
  • Red Hat Single Sign-On 7.4.1
    fixed: vendor fix RHSA-2020:2813
  • Red Hat Text-Only RHOAR
    fixed: vendor fix RHSA-2020:2067
  • Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-jettison 1.3.8-2.redhat_00002.1.ep7.el7, eap7-velocity 1.7.0-3.redhat_00006.1.ep7.el7, eap7-wildfly 7.1.9-2.GA_redhat_00002.1.ep7.el7, eap7-apache-cxf 3.1.16-4.redhat_00003.1.ep7.el7, eap7-netty 4.1.63-1.Final_redhat_00002.1.ep7.el7, eap7-apache-cxf-rt 3.1.16-4.redhat_00003.1.ep7.el7, +5 more Red Hat streams for Apache Kafka jackson-databind
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

4.61% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven com.fasterxml.jackson.core:jackson-databind
>=2.9.0, <2.9.10.4
2.9.10.4

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.