Deserialization in Fasterxml Jackson-databind

CVE-2020-8840

FasterXML jackson-databind 2.0.0 through 2.9.10.2 lacks certain xbean-reflect/JNDI blocking, as demonstrated by org.apache.xbean.propertyeditor.JndiConverter.

Vulnerability class: Insecure Deserialization

EPSS: 0.266 (97.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-8840?
CVE-2020-8840 is a critical-severity vulnerability in Fasterxml Jackson-databind, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2020-02-10.
How severe is CVE-2020-8840?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-8840 known to be exploited?
58 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.