CVE-2019-12814

MEDIUM

jackson-databind 2.0.0-2.9.9 - Unauthenticated Arbitrary File Read via JDOM Polymorphic Typing

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2019-12814. PoCs published by Al1ex, dawetmaster, andikahilmy.

AI-analyzed exploit summary This repository contains a functional PoC for CVE-2019-12814, a deserialization vulnerability in Jackson Databind. The exploit leverages the JDOM XSLTransformer gadget to achieve RCE via crafted payloads targeting JDBC connections.

Description

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x through 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has JDOM 1.x or 2.x jar in the classpath, an attacker can send a specifically crafted JSON message that allows them to read arbitrary local files on the server.

Exploits (3)

nomisec WORKING POC 5 stars
by Al1ex · poc
https://github.com/Al1ex/CVE-2019-12814

This repository contains a functional PoC for CVE-2019-12814, a deserialization vulnerability in Jackson Databind. The exploit leverages the JDOM XSLTransformer gadget to achieve RCE via crafted payloads targeting JDBC connections.

Classification
Working Poc 90%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Jackson Databind (versions affected by CVE-2019-12814)
No auth needed
Prerequisites: Jackson Databind library with vulnerable version · Network access to target · Ability to send crafted JSON payloads
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec WORKING POC
by dawetmaster · poc
https://github.com/dawetmaster/CVE-2019-12814-jackson-databind-vulnerable

This repository contains a vulnerable version of Jackson Databind (2.9.0) that is susceptible to CVE-2019-12814, a deserialization vulnerability. The included source code and build configuration allow for testing and exploitation of the vulnerability in a controlled environment.

Classification
Working Poc 90%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Jackson Databind 2.9.0
No auth needed
Prerequisites: Java environment · Jackson Databind 2.9.0
devstral-2 · analyzed Mar 14, 2026 Full analysis →
nomisec WORKING POC
by andikahilmy · poc
https://github.com/andikahilmy/CVE-2019-12814-jackson-databind-vulnerable

This repository contains a vulnerable version of Jackson Databind (2.9.0) that demonstrates CVE-2019-12814, a deserialization vulnerability. The included source code and build configuration allow for testing and reproducing the exploit.

Classification
Working Poc 90%
Attack Type
Deserialization
Complexity
Moderate
Reliability
Reliable
Target: Jackson Databind 2.9.0
No auth needed
Prerequisites: Java environment · Vulnerable Jackson Databind version
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (55)

Core 55
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/06/msg00019.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2858
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2937
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2935
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2936
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2938
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3044
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3045
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3050
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3046
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3149
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3200
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3292
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3297
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujul2020.html
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2020.html
Third Party Advisory x_refsource_confirm
https://github.com/FasterXML/jackson-databind/issues/2341
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190625-0006/
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2020.html

Scores

CVSS v3 5.9
EPSS 0.1806
EPSS Percentile 95.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-502
Status published
Products (3)
com.fasterxml.jackson.core/jackson-databind 2.9.0 - 2.9.9.1Maven
debian/debian_linux 8.0
fasterxml/jackson-databind 2.0.0 - 2.6.7.3
Published Jun 19, 2019
Tracked Since Feb 18, 2026