# CVE-2019-12384: Deserialization of Untrusted Data in FasterXML jackson-databind > Attackers can achieve remote code execution by exploiting unsafe polymorphic deserialization in the jackson-databind library. - **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/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:** 24 Jun 2019 - **Updated:** 8 Oct 2026 - **Also known as:** ALSA-2019:2720, CLEANSTART-2026-NC21298, DEBIAN-CVE-2019-12384, GHSA-mph4-vhrx-mv67, RHSA-2019:1820, RHSA-2019:2720, RLSA-2019:2720, UBUNTU-CVE-2019-12384 ## What is CVE-2019-12384? CVE-2019-12384 is a medium-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 24 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description FasterXML jackson-databind 2.x before 2.9.9.1 might allow attackers to have a variety of impacts by leveraging failure to block the logback-core class from polymorphic deserialization. Depending on the classpath content, remote code execution may be possible. Weakness: CWE-502 (Deserialization of Untrusted Data) ## Which versions are affected by CVE-2019-12384? 8 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 3 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.0.0 | 2.6.7.3 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.0.0 | 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 | 2.9.9.1 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.9.0 | 2.9.9.1 | | `apache-commons-collections` | AlmaLinux:8 | All versions | 3.2.2-10.module_el8.5.0+150+5f0dbea0 | | `apache-commons-collections` | AlmaLinux:8 | All versions | 3.2.2-10.module_el8.5.0+2577+9e95fe00 | | `apache-commons-lang` | AlmaLinux:8 | All versions | 2.6-21.module_el8.5.0+150+5f0dbea0 | | `apache-commons-lang` | AlmaLinux:8 | All versions | 2.6-21.module_el8.5.0+2577+9e95fe00 | | `bea-stax-api` | AlmaLinux:8 | All versions | 1.2.0-16.module_el8.5.0+150+5f0dbea0 | | `bea-stax-api` | AlmaLinux:8 | All versions | 1.2.0-16.module_el8.5.0+2577+9e95fe00 | | `glassfish-fastinfoset` | AlmaLinux:8 | All versions | 1.2.13-9.module_el8.5.0+150+5f0dbea0 | | `glassfish-fastinfoset` | AlmaLinux:8 | All versions | 1.2.13-9.module_el8.5.0+2577+9e95fe00 | | `glassfish-jaxb-api` | AlmaLinux:8 | All versions | 2.2.12-8.module_el8.5.0+150+5f0dbea0 | | `glassfish-jaxb-api` | AlmaLinux:8 | All versions | 2.2.12-8.module_el8.5.0+2577+9e95fe00 | | `glassfish-jaxb-core` | AlmaLinux:8 | All versions | 2.2.11-11.module_el8.5.0+150+5f0dbea0 | | `glassfish-jaxb-core` | AlmaLinux:8 | All versions | 2.2.11-11.module_el8.5.0+2577+9e95fe00 | | `glassfish-jaxb-runtime` | AlmaLinux:8 | All versions | 2.2.11-11.module_el8.5.0+150+5f0dbea0 | | `glassfish-jaxb-runtime` | AlmaLinux:8 | All versions | 2.2.11-11.module_el8.5.0+2577+9e95fe00 | | `glassfish-jaxb-txw2` | AlmaLinux:8 | All versions | 2.2.11-11.module_el8.5.0+150+5f0dbea0 | | `glassfish-jaxb-txw2` | AlmaLinux:8 | All versions | 2.2.11-11.module_el8.5.0+2577+9e95fe00 | | `jackson-jaxrs-json-provider` | AlmaLinux:8 | All versions | 2.9.9-1.module_el8.5.0+150+5f0dbea0 | | `jackson-jaxrs-json-provider` | AlmaLinux:8 | All versions | 2.9.9-1.module_el8.5.0+2577+9e95fe00 | | `jackson-jaxrs-providers` | AlmaLinux:8 | All versions | 2.9.9-1.module_el8.5.0+150+5f0dbea0 | | `jackson-jaxrs-providers` | AlmaLinux:8 | All versions | 2.9.9-1.module_el8.5.0+2577+9e95fe00 | | `jackson-module-jaxb-annotations` | AlmaLinux:8 | All versions | 2.7.6-4.module_el8.5.0+150+5f0dbea0 | | `jackson-module-jaxb-annotations` | AlmaLinux:8 | All versions | 2.7.6-4.module_el8.5.0+2577+9e95fe00 | | `jakarta-commons-httpclient` | AlmaLinux:8 | All versions | 1:3.1-28.module_el8.5.0+150+5f0dbea0 | | `jakarta-commons-httpclient` | AlmaLinux:8 | All versions | 1:3.1-28.module_el8.5.0+2577+9e95fe00 | | `javassist` | AlmaLinux:8 | All versions | 3.18.1-8.module_el8.5.0+150+5f0dbea0 | | `javassist` | AlmaLinux:8 | All versions | 3.18.1-8.module_el8.5.0+2577+9e95fe00 | | `javassist-javadoc` | AlmaLinux:8 | All versions | 3.18.1-8.module_el8.5.0+150+5f0dbea0 | | `javassist-javadoc` | AlmaLinux:8 | All versions | 3.18.1-8.module_el8.5.0+2577+9e95fe00 | | `python-nss-doc` | AlmaLinux:8 | All versions | 1.0.1-10.module_el8.5.0+150+5f0dbea0.alma | | `python-nss-doc` | AlmaLinux:8 | All versions | 1.0.1-10.module_el8.5.0+2577+9e95fe00.alma | | `python3-nss` | AlmaLinux:8 | All versions | 1.0.1-10.module_el8.5.0+150+5f0dbea0.alma | | `python3-nss` | AlmaLinux:8 | All versions | 1.0.1-10.module_el8.5.0+2577+9e95fe00.alma | Products: Debian Debian Linux, Fasterxml Jackson-Databind, Redhat Enterprise Linux. ## How do I fix CVE-2019-12384? 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 2.9.9.1. ## Is CVE-2019-12384 being exploited? There is no known exploitation of CVE-2019-12384 in the wild and no public exploit code. Public exploit code: - Jackson Rce For CVE-2019-12384 (github_poc): https://github.com/jas502n/CVE-2019-12384 - CVE-2019-12384 漏洞测试环境 (github_poc): https://github.com/MagicZer0/Jackson_RCE-CVE-2019-12384 ## Other vulnerabilities in Debian Debian Linux - [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild) - [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild) - [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild) - [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild) - [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2019-12384 and fix it if it is affected. What it is: CVE-2019-12384 is a medium-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 24 Jun 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-2019-12384 in the wild and no public exploit code. Affected packages and fixed versions: - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0.0; fixed in 2.6.7.3 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0.0; 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 2.9.9.1 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.9.1 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-2019-12384/ (Markdown: https://insights.sbomify.com/CVE-2019-12384/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2019-12384 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-12384 - OSV: https://osv.dev/vulnerability/CVE-2019-12384 --- From sbomify Insights: https://insights.sbomify.com/CVE-2019-12384/ Summaries are generated and may contain mistakes; the official description above is the record.