# CVE-2020-24750: Unsafe Deserialization in jackson-databind > Attackers can execute arbitrary code via deserialization gadgets in jackson-databind when polymorphic typing is enabled. - **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 17 Sep 2020 - **Updated:** 8 Oct 2026 - **Also known as:** CLEANSTART-2026-EV27822, DEBIAN-CVE-2020-24750, GHSA-qjw2-hr98-qgfh, RHSA-2020:4173, ROOT-APP-MAVEN-CVE-2020-24750, UBUNTU-CVE-2020-24750 ## What is CVE-2020-24750? CVE-2020-24750 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 17 Sep 2020. 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 2.9.10.6 mishandles the interaction between serialization gadgets and typing, related to com.pastdev.httpcomponents.configuration.JndiConfiguration. Weakness: CWE-502 (Deserialization of Untrusted Data) ## Which versions are affected by CVE-2020-24750? 4 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 26 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.0 | 2.6.7.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.0 | 2.6.7.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.7.0 | 2.9.10.6 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.7.0 | 2.9.10.6 | | `rh-maven35-jackson-databind` | Red Hat:rhel_software_collections:3::el7 | All versions | 0:2.7.6-2.11.el7 | | `rh-maven35-jackson-databind-javadoc` | Red Hat:rhel_software_collections:3::el7 | All versions | 0:2.7.6-2.11.el7 | Products: Debian Debian Linux, Fasterxml Jackson-Databind, Oracle Agile Product Lifecycle Management, Oracle Application Testing Suite, Oracle Autovue for Agile Product Lifecycle Management, Oracle Banking Corporate Lending Process Management, Oracle Banking Credit Facilities Process Management, Oracle Banking Liquidity Management, Oracle Banking Supply Chain Finance, Oracle Blockchain Platform, Oracle Communications Calendar Server, Oracle Communications Contacts Server, Oracle Communications Diameter Signaling Router, Oracle Communications Element Manager, Oracle Communications Instant Messaging Server, Oracle Communications Messaging Server, Oracle Communications Offline Mediation Controller, Oracle Communications Policy Management, Oracle Communications Pricing Design Center, Oracle Communications Services Gatekeeper and 6 more. ## How do I fix CVE-2020-24750? Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.6.7.5 or 2.9.10.6. ## Is CVE-2020-24750 being exploited? There is no known exploitation of CVE-2020-24750 in the wild and no public exploit code. Public exploit code: - CVE-2020-24750 (github_poc): https://github.com/Al1ex/CVE-2020-24750 ## 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-2020-24750 and fix it if it is affected. What it is: CVE-2020-24750 is a high-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 17 Sep 2020. 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-2020-24750 in the wild and no public exploit code. Affected packages and fixed versions: - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0; fixed in 2.6.7.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.0; fixed in 2.6.7.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.9.10.6 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.9.10.6 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-2020-24750/ (Markdown: https://insights.sbomify.com/CVE-2020-24750/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-24750 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-24750 - OSV: https://osv.dev/vulnerability/CVE-2020-24750 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-24750/ Summaries are generated and may contain mistakes; the official description above is the record.