# CVE-2018-7489: FasterXML jackson-databind allows unauthenticated remote code execution > Unauthenticated remote code execution via malicious JSON input in jackson-databind due to incomplete deserialization blacklist fix. - **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/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:** 26 Feb 2018 - **Updated:** 15 Oct 2026 - **Also known as:** CLEANSTART-2026-MD56450, DEBIAN-CVE-2018-7489, DSA-4190-1, GHSA-cggj-fvv3-cqwv, RHEA-2018:2082, ROOT-APP-MAVEN-CVE-2018-7489, UBUNTU-CVE-2018-7489 ## What is CVE-2018-7489? CVE-2018-7489 is a critical unsafe deserialization vulnerability in Debian Debian Linux, published on 26 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description FasterXML jackson-databind before 2.7.9.3, 2.8.x before 2.8.11.1 and 2.9.x before 2.9.5 allows unauthenticated remote code execution because of an incomplete fix for the CVE-2017-7525 deserialization flaw. This is exploitable by sending maliciously crafted JSON input to the readValue method of the ObjectMapper, bypassing a blacklist that is ineffective if the c3p0 libraries are available in the classpath. Weakness: CWE-502 (Deserialization of Untrusted Data), CWE-184 (Incomplete List of Disallowed Inputs) ## Which versions are affected by CVE-2018-7489? 8 open source packages ship an affected version, including com.fasterxml.jackson.core:jackson-databind. It affects 5 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `com.fasterxml.jackson.core:jackson-databind` | Maven | All versions | 2.6.7.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | All versions | 2.6.7.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.7.0 | 2.7.9.3 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.7.0 | 2.7.9.3 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.8.0 | 2.8.11.1 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.8.0 | 2.8.11.1 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.9.0 | 2.9.5 | | `com.fasterxml.jackson.core:jackson-databind` | Maven | From 2.9.0 | 2.9.5 | | `rhvm-appliance` | Red Hat:enterprise_linux:7::hypervisor | All versions | 2:4.2-20180620.0.el7 | Products: Debian Debian Linux, Fasterxml Jackson-Databind, Oracle Communications Billing and Revenue Management, Oracle Communications Instant Messaging Server, Redhat Jboss Enterprise Application Platform. ## How do I fix CVE-2018-7489? Upgrade com.fasterxml.jackson.core:jackson-databind to a fixed version for your release line: 2.6.7.5, 2.7.9.3, 2.8.11.1 or 2.9.5. ## Is CVE-2018-7489 being exploited? There is no known exploitation of CVE-2018-7489 in the wild and no public exploit code. Public exploit code: - https://github.com/tafamace/CVE-2018-7489 (github_poc): https://github.com/tafamace/CVE-2018-7489 ## 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-2018-7489 and fix it if it is affected. What it is: CVE-2018-7489 is a critical unsafe deserialization vulnerability in Debian Debian Linux, published on 26 Feb 2018. 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-2018-7489 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 2.6.7.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected all versions; fixed in 2.6.7.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.7.9.3 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.7.0; fixed in 2.7.9.3 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.8.0; fixed in 2.8.11.1 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.8.0; fixed in 2.8.11.1 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.5 - com.fasterxml.jackson.core:jackson-databind (Maven): affected from 2.9.0; fixed in 2.9.5 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-2018-7489/ (Markdown: https://insights.sbomify.com/CVE-2018-7489/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7489 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7489 - OSV: https://osv.dev/vulnerability/CVE-2018-7489 --- From sbomify Insights: https://insights.sbomify.com/CVE-2018-7489/ Summaries are generated and may contain mistakes; the official description above is the record.