CVE-2019-12086
HIGH 7.5EPSS 21.9%
A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint, the service has the mysql-connector-java jar (8.0.14 or earlier) in the classpath, and an attacker can host a crafted MySQL server reachable by the victim, an attacker can send a crafted JSON message that allows them to read arbitrary local files on the server. This occurs because of missing com.mysql.cj.jdbc.admin.MiniAdmin validation.
- CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS v2.0 NVD
- 5.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N - EPSS
- 21.95% chance of exploitation in the next 30 days, 98th percentile
- Published
- 2019-05-17
- Updated
- 2026-10-08
Proof-of-concept exploits (4)
- Al1ex/CVE-2019-120861★ · 2026-06-30
- galimba/Jackson-deserialization-PoC8★ · 2020-08-03
- migupl/poc-yaas-server0★ · 2022-02-11
- motoyasu-saburi/CVE-2019-12086-jackson-databind-file-read1★ · 2019-05-27
Security advisories
- http://russiansecurity.expert/2016/04/20/mysql-connect-file-read
- http://www.securityfocus.com/bid/109227
- https://access.redhat.com/errata/RHSA-2019:2858
- https://access.redhat.com/errata/RHSA-2019:2935
- https://access.redhat.com/errata/RHSA-2019:2936
- https://access.redhat.com/errata/RHSA-2019:2937
- https://access.redhat.com/errata/RHSA-2019:2938
- https://access.redhat.com/errata/RHSA-2019:2998
- https://access.redhat.com/errata/RHSA-2019:3044
- https://access.redhat.com/errata/RHSA-2019:3045
- https://access.redhat.com/errata/RHSA-2019:3046
- https://access.redhat.com/errata/RHSA-2019:3050
- https://access.redhat.com/errata/RHSA-2019:3149
- https://access.redhat.com/errata/RHSA-2019:3200
- FasterXML/jackson-databind/issues/2326
- FasterXML/jackson/wiki/Jackson-Release-2.9.9
- https://lists.debian.org/debian-lts-announce/2019/05/msg00030.html
- https://seclists.org/bugtraq/2019/May/68
- https://security.netapp.com/advisory/ntap-20190530-0003
- https://www.debian.org/security/2019/dsa-4452
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- advisories/GHSA-5ww9-j83m-q7qx