# CVE-2019-14439: Deserialization of untrusted data in FasterXML jackson-databind > Attackers can execute arbitrary code via deserialization in jackson-databind when Default Typing is enabled and logback is present. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 30 Jul 2019 - **Updated:** 8 Oct 2026 - **Also known as:** CLEANSTART-2026-PS95562, CVE-2019-14361, DEBIAN-CVE-2019-14439, GHSA-gwp4-hfv6-p7hw, ROOT-APP-MAVEN-CVE-2019-14439, UBUNTU-CVE-2019-14439 ## What is CVE-2019-14439? CVE-2019-14439 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 30 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official 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. Weakness: CWE-502 (Deserialization of Untrusted Data) ## Which versions are affected by CVE-2019-14439? 8 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 18 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.fasterxml.jackson.core:jackson-databind` | Maven | All versions | 2.6.7.3 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | All versions | 2.6.7.3 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.7.0 | 2.7.9.6 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.7.0 | 2.7.9.6 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.8.0 | 2.8.11.4 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.8.0 | 2.8.11.4 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.9.0 | 2.9.9.2 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.9.0 | 2.9.9.2 | Products: Apache Drill, Debian Debian Linux, Fasterxml Jackson-Databind, Fedoraproject Fedora, Oracle Banking Platform, Oracle Communications Diameter Signaling Router, Oracle Communications Instant Messaging Server, Oracle Financial Services Analytical Applications Infrastructure, Oracle Global Lifecycle Management Opatch, Oracle Goldengate Stream Analytics, Oracle Jd Edwards Enterpriseone Orchestrator, Oracle Jd Edwards Enterpriseone Tools, Oracle Primavera Gateway, Oracle Retail Customer Management and Segmentation Foundation, Oracle Retail Xstore Point of Service, Oracle Siebel Engineering - Installer \& Deployment, Oracle Siebel Ui Framework, Redhat Jboss Middleware Text-Only Advisories. ## How do I fix CVE-2019-14439? Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.6.7.3, 2.7.9.6, 2.8.11.4 or 2.9.9.2. ## Is CVE-2019-14439 being exploited? There is no known exploitation of CVE-2019-14439 in the wild and no public exploit code. Public exploit code: - Jackson-databind RCE (github_poc): https://github.com/jas502n/CVE-2019-14439 ## Other vulnerabilities in Debian Debian Linux - [CVE-2023-48362](https://insights.sbomify.com/CVE-2023-48362/): Apache Drill: XXE Vulnerability in XML Format Reader (critical 9.8) - [CVE-2010-5312](https://insights.sbomify.com/CVE-2010-5312/): Cross-site Scripting in jquery-ui (medium 6.1) - [CVE-2017-12630](https://insights.sbomify.com/CVE-2017-12630/): Apache Drill vulnerable to Cross-site Scripting (medium 5.4) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2019-14439 and fix it if it is affected. What it is: CVE-2019-14439 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 30 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: There is no known exploitation of CVE-2019-14439 in the wild and no public exploit code. Affected packages and fixed versions: - com.fasterxml.jackson.core:jackson-databind (Maven): affected all versions; fixed in 2.6.7.3 - com.fasterxml.jackson.core:jackson-databind (Maven): affected all versions; fixed in 2.6.7.3 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.7.9.6 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.7.9.6 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.8.0; fixed in 2.8.11.4 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.8.0; fixed in 2.8.11.4 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.9.2 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.9.2 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2019-14439/ (Markdown: https://insights.sbomify.com/CVE-2019-14439/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-14439 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-14439 - OSV: https://osv.dev/vulnerability/CVE-2019-14439 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-14439/ Summaries are generated and may contain mistakes; the official description above is the record.