# Defense in Depth update for NuGet Client

Advisory record · `GHSA-g4vj-cjjj-v7hg`

- **Identifiers:** `GHSA-g4vj-cjjj-v7hg`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **Weakness (CWE):** [CWE-345](https://cwe.mitre.org/data/definitions/345.html)
- **Tags:** [CWE-345](https://agentprime.io/advisories/tag/cwe-345.md)
- **Published:** 14 Apr 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 14 Apr 2026, 23:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `NuGet.Packaging` (NuGet): affected `>=4.9.0, <4.9.7 || >=5.11.0, <5.11.7 || >=6.8.0, <6.8.2 || >=6.11.0, <6.11.2 || >=6.12.0, <6.12.5 || >=6.14.0, <6.14.3 || >=7.0.0, <7.0.3 || >=7.3.0, <7.3.1`; fixed in `4.9.7`, `5.11.7`, `6.8.2`, `6.11.2`, `6.12.5`, `6.14.3`, `7.0.3`, `7.3.1`
- `NuGet.Protocol` (NuGet): affected `>=4.9.0, <4.9.7 || >=5.11.0, <5.11.7 || >=6.8.0, <6.8.2 || >=6.11.0, <6.11.2 || >=6.12.0, <6.12.5 || >=6.14.0, <6.14.3 || >=7.0.0, <7.0.3 || >=7.3.0, <7.3.1`; fixed in `4.9.7`, `5.11.7`, `6.8.2`, `6.11.2`, `6.12.5`, `6.14.3`, `7.0.3`, `7.3.1`
- `NuGet.CommandLine` (NuGet): affected `>=4.9.0, <4.9.7 || >=5.11.0, <5.11.7 || >=6.8.0, <6.8.2 || >=6.11.0, <6.11.2 || >=6.12.0, <6.12.5 || >=6.14.0, <6.14.3 || >=7.0.0, <7.0.3 || >=7.3.0, <7.3.1`; fixed in `4.9.7`, `5.11.7`, `6.8.2`, `6.11.2`, `6.12.5`, `6.14.3`, `7.0.3`, `7.3.1`

## 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

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 15:21 UTC: First seen by agentprime
- 31 Oct 2026, 15:21 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-g4vj-cjjj-v7hg)

## Sources

- [GitHub Advisory Database: GHSA-g4vj-cjjj-v7hg](https://github.com/advisories/GHSA-g4vj-cjjj-v7hg)
- [OSV: GHSA-g4vj-cjjj-v7hg](https://osv.dev/vulnerability/GHSA-g4vj-cjjj-v7hg)
- <https://github.com/NuGet/NuGet.Client/security/advisories/GHSA-g4vj-cjjj-v7hg>
- <https://github.com/NuGet/NuGetGallery/security/advisories/GHSA-9r3h-v4hx-rhfr>
- <https://github.com/NuGet/NuGet.Client>

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-g4vj-cjjj-v7hg>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-g4vj-cjjj-v7hg/>. Everything for agents: <https://agentprime.io/llms.txt>.