# pnpm: Environment secrets exfiltrated via env-placeholder expansion in proxy settings read from an untrusted pnpm-workspace.yaml

Advisory record · `GHSA-vx52-2968-3vc6`

- **Identifiers:** `GHSA-vx52-2968-3vc6` · `CVE-2026-101043`
- **State:** Confirmed
- **Severity:** CVSS 8.3 High
- **Critical:** No
- **Weakness (CWE):** [CWE-201](https://cwe.mitre.org/data/definitions/201.html) · [CWE-319](https://cwe.mitre.org/data/definitions/319.html) · [CWE-522](https://cwe.mitre.org/data/definitions/522.html)
- **Tags:** [Information disclosure](https://agentprime.io/advisories/tag/info-disclosure.md) · [Weak cryptography or TLS](https://agentprime.io/advisories/tag/weak-crypto.md) · [Hard-coded credentials](https://agentprime.io/advisories/tag/hard-coded-credentials.md)
- **Published:** 1 Sept 2026
- **Updated:** 28 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 1 Sept 2026, 19:22 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `pnpm` (npm): affected `>=11.0.0, <11.11.0 || >=10.7.0, <10.34.5`; fixed in `11.11.0`, `10.34.5`

## 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

- 8.3 High, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N`, from CNA (VulnCheck)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0029, the 21st percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 1 Sept 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-vx52-2968-3vc6](https://github.com/advisories/GHSA-vx52-2968-3vc6)
- [OSV: GHSA-vx52-2968-3vc6](https://osv.dev/vulnerability/GHSA-vx52-2968-3vc6)
- <https://github.com/pnpm/pnpm/security/advisories/GHSA-vx52-2968-3vc6>
- <https://github.com/pnpm/pnpm/pull/12871>
- <https://github.com/pnpm/pnpm/pull/12898>
- <https://github.com/pnpm/pnpm/commit/36928beae9afb64a2a6a1221df54e66d361320c8>
- <https://github.com/pnpm/pnpm/commit/5a4daec4bd5f0170b18ae053aff093eea56368ba>
- <https://github.com/orgs/pnpm/discussions/13598>
- <https://github.com/pnpm/pnpm>
- <https://github.com/pnpm/pnpm/releases/tag/v10.34.5>
- <https://github.com/pnpm/pnpm/releases/tag/v11.11.0>

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-vx52-2968-3vc6>, 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-vx52-2968-3vc6/>. Everything for agents: <https://agentprime.io/llms.txt>.