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Public proof of conceptFix available

CVE-2019-12086

A public proof of concept exists; no exploitation attested.

  • Published2019-05-17
  • Fixed in2.9.9 · 2.8.11.4 · 2.7.9.6 · 2.6.7.3
  • WeaknessCWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2019-05-1717:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-12086?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-12086?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Fasterxml jackson-databind
BranchAffectedFixed in
2.9≥ 2.9.0, < 2.9.92.9.9
2.8≥ 2.8.0, < 2.8.11.42.8.11.4
2.7≥ 2.7.0, < 2.7.9.62.7.9.6
2.x≥ 2.0.0, < 2.6.7.32.6.7.3
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published
9.0= 9.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • ansible-runnerRed Hat:satellite:6.7::el7all versions · fixed in 0:1.3.4-2.el7arand 1 other package
  • ansiblerole-foreman_scap_clientRed Hat:satellite:6.7::el7all versions · fixed in 0:0.0.3-1.el7sat
  • ansiblerole-satellite-receptor-installerRed Hat:satellite:6.7::el7all versions · fixed in 0:0.6.4-1.el7sat
  • apache-commons-collectionsRed Hat:enterprise_linux:8::appstreamall versions · fixed in 0:3.2.2-10.module+el8.1.0+3366+6dfb954c
  • apache-commons-langRed Hat:enterprise_linux:8::appstreamall versions · fixed in 0:2.6-21.module+el8.1.0+3366+6dfb954c
  • apache-hiveCleanStartall versions · fixed in 3.1.3-r0
  • bea-staxRed Hat:enterprise_linux:8::appstreamall versions · fixed in 0:1.2.0-16.module+el8.1.0+3366+6dfb954cand 1 other package
  • candlepinRed Hat:satellite:6.7::el7all versions · fixed in 0:2.9.25-1.el7satand 1 other package

428 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-12086 Red Hat Product Security1,969 products fixed · 30 known affected

    jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server.

    jackson-databind as a component of Red Hat BPM Suite 6 · jackson-databind as a component of Red Hat JBoss A-MQ 6 · jackson-databind as a component of Red Hat JBoss Fuse 6 · +27 more

  • RHSA-2020:3192 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat Fuse 7.7.0 release and security update

  • RHBA-2020:1494 Red Hat Product Security37 products fixed

    Red Hat Bug Fix Advisory: Satellite 6.6.3 Async Bug Fix Update

  • RHSA-2020:1454 Red Hat Product Security1,294 products fixed

    Red Hat Security Advisory: Satellite 6.7 release.

  • RHBA-2019:3416 Red Hat Product Security126 products fixed

    Red Hat Bug Fix Advisory: pki-core:10.6 and pki-deps:10:6 bug fix and enhancement update

  • RHSA-2019:3200 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: Red Hat AMQ Streams 1.3.0 release and security update

11 more advisories

Full record on NVD

Fix

  1. Update Fasterxml jackson-databind to 2.9.9 · 2.8.11.4 · 2.7.9.6 · 2.6.7.3
  2. Vendor fix Red Hat Product Security RHSA-2020:3192 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. Installation instructions are available from the Fuse 7.7.0 product documentation page: https://access.redhat.com/documentation/en-us/red_hat…
  3. Vendor fix Red Hat Product Security RHBA-2020:1494 · 37 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_satellite/6.6/html/upgrading_and_updating_red_hat_satellite/updating…
  4. Vendor fix Red Hat Product Security RHSA-2020:1454 · 1,294 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_satellite/6.7/html/upgrading_and_updating_red_hat_satellite/updating…
  5. Vendor fix Red Hat Product Security RHBA-2019:3416 · 126 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
  6. Vendor fix Red Hat Product Security RHSA-2019:3200 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link (you must log in to download the update).
  7. Vendor fix Red Hat Product Security RHSA-2019:3149 · 2 productsSee the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/3.11/release_notes/ocp_3_11_release_notes.html

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedmotoyasu-saburi/CVE-2019-12086-jackson-databind-file-readAl1ex/CVE-2019-12086
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-05-17
Last Modified
2026-10-08
NVD status
Modified
GitHub Advisory
GHSA-5ww9-j83m-q7qx

Frequently asked questions

What is CVE-2019-12086?

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.

Is CVE-2019-12086 actively exploited?

Active exploitation of CVE-2019-12086 has not been confirmed. Its EPSS score was 21.9% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-12086?

CVE-2019-12086 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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