# CVE-2021-33623: node-trim-newlines: The trim-newlines package before 3.0.1 and 4.x before 4.0.1 for Node.js has an issue related to regular expression de...

CVE-2021-33623 is fixed in node-trim-newlines on 1 platform, first by node-trim-newlines 1.0.0-1ubuntu0.18.04.1, released May 28, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-33623
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0293
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 28, 2021

## Description

The trim-newlines package before 3.0.1 and 4.x before 4.0.1 for Node.js has an issue related to regular expression denial-of-service (ReDoS) for the .end() method.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-trim-newlines Ubuntu 18.04.6 LTS (bionic) | 1.0.0-1ubuntu0.18.04.1 | [node-trim-newlines 1.0.0-1ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-node-trim-newlines-1.0.0-1ubuntu0.18.04.1.md) | May 28, 2021 |
| Linux | node-trim-newlines Ubuntu 20.04 LTS (focal) | 1.0.0-1ubuntu0.20.04.1 | [node-trim-newlines 1.0.0-1ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-node-trim-newlines-1.0.0-1ubuntu0.20.04.1.md) | May 28, 2021 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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