# Denial of Service in SheetJS Pro

Advisory record · `GHSA-g973-978j-2c3p`

- **Identifiers:** `GHSA-g973-978j-2c3p` · `CVE-2021-32014`
- **State:** Confirmed
- **Severity:** CVSS 5.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-345](https://cwe.mitre.org/data/definitions/345.html) · [CWE-400](https://cwe.mitre.org/data/definitions/400.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md) · [CWE-345](https://agentprime.io/advisories/tag/cwe-345.md)
- **Published:** 22 Jul 2021
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 22 Jul 2021, 19:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `xlsx` (npm): affected `<0.17.0`; fixed in `0.17.0`
- `org.webjars.npm:xlsx` (Maven): affected `<0.17.0`; fixed in `0.17.0`

## 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

- 5.5 Medium, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0088, the 59th percentile, on 12 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 22 Jul 2021. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-g973-978j-2c3p](https://github.com/advisories/GHSA-g973-978j-2c3p)
- [OSV: GHSA-g973-978j-2c3p](https://osv.dev/vulnerability/GHSA-g973-978j-2c3p)
- <https://nvd.nist.gov/vuln/detail/CVE-2021-32014>
- <https://floqast.com/engineering-blog/post/fuzzing-and-parsing-securely>
- <https://sheetjs.com/pro>
- <https://www.npmjs.com/package/xlsx/v/0.17.0>
- <https://www.oracle.com/security-alerts/cpujan2022.html>

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-g973-978j-2c3p>, 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-g973-978j-2c3p/>. Everything for agents: <https://agentprime.io/llms.txt>.