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Public proof of conceptFix available

CVE-2019-14439

A public proof of concept exists; no exploitation attested.

  • Published2019-07-30
  • 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 2.9.9.2. This occurs when Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the logback jar in the classpath.

Timeline

dates in UTC
  1. 2019-07-3011:15CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  3. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 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-2019-14439?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-14439?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Oracle banking platform
BranchAffectedFixed in
2.4= 2.4.0no fix published
2.4= 2.4.1no fix published
2.5= 2.5.0no fix published
2.6= 2.6.0no fix published
2.6= 2.6.1no fix published
2.7= 2.7.0no fix published
2.7= 2.7.1no fix published
Fasterxml jackson-databind
BranchAffectedFixed in
2.9≥ 2.9.0, < 2.9.9.22.9.9.2
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
2.6< 2.6.7.32.6.7.3
Oracle global lifecycle management opatch
BranchAffectedFixed in
13.9≥ 13.9.4.0.0, < 13.9.4.2.113.9.4.2.1
12.2≥ 12.2.0.1.0, < 12.2.0.1.1912.2.0.1.19
11.2< 11.2.0.3.2311.2.0.3.23
11.2= 11.2.0.3.23no fix published
13.9= 13.9.4.2.1no fix published

15 more products in the sources.

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

Fix

Advisories and patches

Detection

read 2026-10-23 19:23 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedjas502n/CVE-2019-14439
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2026-10-08
  • OpenCVESSVC decisionnone—
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-502read 2026-10-23
  • FIRST EPSSEPSS score10.8 %read 2026-10-23
  • PoC-in-GitHubproof of concept1read 2026-10-23
  • OSVaffected packages—

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
2019-07-30
Last Modified
2026-10-08
NVD status
Modified

Frequently asked questions

What is CVE-2019-14439?

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9.2. This occurs when Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the logback jar in the classpath.

Is CVE-2019-14439 actively exploited?

Active exploitation of CVE-2019-14439 has not been confirmed. Its EPSS score was 10.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-14439?

CVE-2019-14439 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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