CVE-2020-8840 - MergeBase Vulnerability Database
Risk Score
High severity
Out of 10
Feb 10, 2020
Feb 22, 2021


FasterXML jackson-databind 2.0.0 through lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.
MergeBase Comment
The CVE description makes it sound like version and newer contains a more general defense against "xbean-reflect/JNDI" attacks, but in truth it's just a blacklist entry added for org.apache.xbean.propertyeditor.JndiConverter. See for yourself!
git clone
git log -p --first-parent jackson-databind- -- src/main

| +        // [databind#2620]: xbean-reflect
| +        s.add("org.apache.xbean.propertyeditor.JndiConverter");
| +

Jackson-databind probably has more CVEs than any other open source Java library on the planet. But that is a bit misleading, because the CVE's tend to be associated with blacklist "gadget" entries added to jackson-databind's list of Java objects it will refuse to deserialize against. A good blog post at explains this in more detail.

Common Weakness Enumeration (CWE)

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