CVE-2020-35490 Serialization gadgets exploit in jackson-databind

What is CVE-2020-35490?

CVE-2020-35490 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 17 Dec 2020. 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 org.apache.commons.dbcp2.datasources.PerUserPoolDataSource.

Weakness: CWE-502

Which versions are affected by CVE-2020-35490?

2 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 25 products.

Products include Debian Debian Linux, Fasterxml Jackson-Databind, Netapp Service Level Manager, Oracle Agile Product Lifecycle Management, Oracle Application Testing Suite, Oracle Autovue for Agile Product Lifecycle Management and 19 more.

How do I fix CVE-2020-35490?

Upgrade com.fasterxml.jackson.core:jackson-databind to 2.9.10.8 or later.

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

Is CVE-2020-35490 being exploited?

There is no known exploitation of CVE-2020-35490 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-TW88470, DEBIAN-CVE-2020-35490, GHSA-wh8g-3j2c-rqj5, ROOT-APP-MAVEN-CVE-2020-35490, UBUNTU-CVE-2020-35490.