CVE-2020-36189 Unsafe Deserialization in jackson-databind

What is CVE-2020-36189?

CVE-2020-36189 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 6 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to com.newrelic.agent.deps.ch.qos.logback.core.db.DriverManagerConnectionSource.

Weakness: CWE-502

Which versions are affected by CVE-2020-36189?

4 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 40 products.

Products include Debian Debian Linux, Fasterxml Jackson-Databind, Netapp Cloud Backup, Netapp Service Level Manager, Oracle Agile Product Lifecycle Management, Oracle Application Testing Suite and 34 more.

How do I fix CVE-2020-36189?

Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.6.7.5 or 2.9.10.8.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2020-36189 being exploited?

There is no known exploitation of CVE-2020-36189 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLEANSTART-2026-WO32064, DEBIAN-CVE-2020-36189, GHSA-vfqx-33qm-g869, ROOT-APP-MAVEN-CVE-2020-36189, UBUNTU-CVE-2020-36189.