# FasterXML jackson-databind allows unauthenticated remote code execution Advisory record · `GHSA-cggj-fvv3-cqwv` - **Identifiers:** `GHSA-cggj-fvv3-cqwv` · `CVE-2018-7489` - **State:** Confirmed - **Severity:** CVSS 9.8 Critical - **Critical:** Yes: CVSS 9+, CVSS 7+ and EPSS - **Weakness (CWE):** [CWE-184](https://cwe.mitre.org/data/definitions/184.html) · [CWE-502](https://cwe.mitre.org/data/definitions/502.html) - **Tags:** [Insecure deserialization](https://agentprime.io/advisories/tag/deserialization.md) · [CWE-184](https://agentprime.io/advisories/tag/cwe-184.md) - **Published:** 16 Oct 2018 - **Updated:** 15 Mar 2024 - **Reviewed by a person:** No Published by the GitHub Advisory Database at 16 Oct 2018, 17:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. ## Critical Critical, because: - CVSS score 9.8: 9.0 or more. - CVSS score 9.8 (7.0 or more) and EPSS 0.20 (0.1 or more): a high score and a real chance of exploitation in the next 30 days. How we decide what’s critical: ## Affected packages - `com.fasterxml.jackson.core:jackson-databind` (Maven): affected `>=2.8.0, <2.8.11.1 || >=2.9.0, <2.9.5 || >=2.7.0, <2.7.9.3 || <2.6.7.5`; fixed in `2.8.11.1`, `2.9.5`, `2.7.9.3`, `2.6.7.5` ## Machine-written summary Summary written by Claude Haiku from the source advisory. Not reviewed by a person. > FasterXML jackson-databind versions before 2.6.7.5, 2.7.x before 2.7.9.3, 2.8.x before 2.8.11.1, and 2.9.x before 2.9.5 are vulnerable. An unauthenticated attacker can send crafted JSON to the readValue method of ObjectMapper, bypassing a blacklist when the c3p0 libraries are on the classpath, which allows remote code execution. Upgrade to 2.6.7.5, 2.7.9.3, 2.8.11.1, 2.9.5, or later. Written 8 Nov 2026. ## Not analysed yet We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check. ## Severity and exploitation - 9.8 Critical, CVSS 3.0: `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database - **CISA KEV:** Not listed. - **EPSS:** 0.20, the 97th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 31 Oct 2026, 15:13 UTC: First seen by agentprime - 31 Oct 2026, 15:13 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-cggj-fvv3-cqwv) ## Sources - [GitHub Advisory Database: GHSA-cggj-fvv3-cqwv](https://github.com/advisories/GHSA-cggj-fvv3-cqwv) - [OSV: GHSA-cggj-fvv3-cqwv](https://osv.dev/vulnerability/GHSA-cggj-fvv3-cqwv) - - - - - - - - - - - - Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code. ## Check whether this affects you A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet. - With the agentprime MCP server (), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: - In a browser: reads your lockfile in the browser, never uploading it. - Whether it touches your code, with file and line: the Claude Code plugin, - As JSON: , or `POST https://api.agentprime.io/v1/match` with your packages () --- The web page: . Everything for agents: .