# Arbitrary File Overwrite in Eclipse JGit

Advisory record · `GHSA-3p86-9955-h393`

- **Identifiers:** `GHSA-3p86-9955-h393` · `CVE-2023-4759`
- **State:** Confirmed
- **Severity:** CVSS 8.8 High
- **Critical:** No
- **Weakness (CWE):** [CWE-59](https://cwe.mitre.org/data/definitions/59.html) · [CWE-178](https://cwe.mitre.org/data/definitions/178.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md) · [CWE-178](https://agentprime.io/advisories/tag/cwe-178.md)
- **Published:** 18 Sept 2023
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 18 Sept 2023, 15:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.eclipse.jgit:org.eclipse.jgit` (Maven): affected `>=6.0.0.202111291000-r, <6.6.1.202309021850-r || <5.13.3.202401111512-r`; fixed in `6.6.1.202309021850-r`, `5.13.3.202401111512-r`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Eclipse JGit versions from 6.0.0.202111291000-r up to 6.6.1.202309021850-r (exclusive) and from 5.13.3.202401111512-r (exclusive) are affected. A specially crafted repository with a symbolic link can make JGit write files outside the working tree when it is cloned or checked out on a case-insensitive filesystem, such as default Windows or macOS setups; the user must be able to create symbolic links. This can lead to remote code execution. Upgrade to 6.6.1.202309021850-r or 5.13.3.202401111512-r. As a workaround, set core.symlinks to false before checking out.

Written 2 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

- 8.8 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`, from CNA (eclipse)

- **CISA KEV:** Not listed.
- **EPSS:** 0.022, the 82nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:18 UTC: First seen by agentprime
- 31 Oct 2026, 14:18 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-3p86-9955-h393)

## Sources

- [GitHub Advisory Database: GHSA-3p86-9955-h393](https://github.com/advisories/GHSA-3p86-9955-h393)
- [OSV: GHSA-3p86-9955-h393](https://osv.dev/vulnerability/GHSA-3p86-9955-h393)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-4759>
- <https://github.com/eclipse-jgit/jgit/issues/30>
- <https://git.eclipse.org/c/jgit/jgit.git>
- <https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1>
- <https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11>
- <https://projects.eclipse.org/projects/technology.jgit/releases/5.13.3>
- <https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1>

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 (<https://api.agentprime.io/mcp>), 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: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-3p86-9955-h393>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-3p86-9955-h393/>. Everything for agents: <https://agentprime.io/llms.txt>.