CVE-2021-33623

Uncontrolled Resource Consumption in trim-newlines

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.93%Up 2.3 points since May 29, 2021

What each source reports

NVD Score used 7.5

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.

Record: CVE-2021-33623
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-400
Updated: 2026-11-02

CVE List No score

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.

Record: CVE-2021-33623
Updated: 2026-11-02

EUVDEUVD-2021-1281 No score

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.

Record: EUVD-2021-1281
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7p7h-4mm5-852v 7.5

Uncontrolled Resource Consumption in trim-newlines

@rkesters/gnuplot is an easy to use node module to draw charts using gnuplot and ps2pdf. 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.

Record: GHSA-7p7h-4mm5-852v
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-400
Updated: 2026-11-02

OSV 7.5

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.

Record: CVE-2021-33623
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2021-33623 7.5

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.

Record: DEBIAN-CVE-2021-33623
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

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OSVGHSA-7p7h-4mm5-852v 7.5

Uncontrolled Resource Consumption in trim-newlines

Record: GHSA-7p7h-4mm5-852v
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-400
Updated: 2026-11-02

OSVRHSA-2022:5555 7.5

Red Hat Security Advisory: RHV Manager (ovirt-engine) [ovirt-4.5.1] security, bug fix and update

Record: RHSA-2022:5555
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-33623 7.5

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.

Record: UBUNTU-CVE-2021-33623
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVCLSA-2026-1772496678 No score

TuxCare security update for trim-newlines (1 CVE)

TuxCare rebuilt trim-newlines to address 1 CVE. Fixed in 1.0.0-tuxcare.1.

Record: CLSA-2026-1772496678
Updated: 2026-11-02

OSVCLSA-2026-1773015268 No score

TuxCare security update for trim-newlines (1 CVE)

TuxCare rebuilt trim-newlines to address 1 CVE. Fixed in 2.0.0-tuxcare.1.

Record: CLSA-2026-1773015268
Updated: 2026-11-02

OSVCLSA-2026-1777163883 No score

TuxCare security update for trim-newlines (1 CVE)

TuxCare rebuilt trim-newlines to address 1 CVE. Fixed in 3.0.0-tuxcare.1.

Record: CLSA-2026-1777163883
Updated: 2026-11-02

OSVROOT-APP-NPM-CVE-2021-33623 No score

CVE-2021-33623 in @rootio/trim-newlines - Patched by Root

Root has patched CVE-2021-33623 in the @rootio/trim-newlines package for Root:npm. Multiple fixed versions available.

Record: ROOT-APP-NPM-CVE-2021-33623
Updated: 2026-11-02

OSVUSN-5999-1 No score

node-trim-newlines vulnerability

It was discovered that trim-newlines incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. (CVE-2021-33623)

Record: USN-5999-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`trim-newlines` npm	before 3.0.1	3.0.1
`trim-newlines` npm	4.0.0 to 4.0.0	4.0.1
`trim-newlines` TuxCare:npm	1.0.0-tuxcare.0 up to 1.0.0-tuxcare.1, plus listed versions 1.0.0	1.0.0-tuxcare.1
`trim-newlines` TuxCare:npm	2.0.0-tuxcare.0 up to 2.0.0-tuxcare.1, plus listed versions 2.0.0	2.0.0-tuxcare.1
`trim-newlines` TuxCare:npm	3.0.0-tuxcare.0 up to 3.0.0-tuxcare.1, plus listed versions 3.0.0	3.0.0-tuxcare.1
`node-trim-newlines` Debian:12	before 3.0.0+~3.0.0-1	3.0.0+~3.0.0-1
`node-trim-newlines` Debian:13	before 3.0.0+~3.0.0-1	3.0.0+~3.0.0-1
`node-trim-newlines` Debian:14	before 3.0.0+~3.0.0-1	3.0.0+~3.0.0-1
`node-trim-newlines` Debian:10	before 1.0.0-1+deb10u1, plus listed versions 1.0.0-1	1.0.0-1+deb10u1
`trim-newlines` npm	4.0.0 up to 4.0.1	4.0.1

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Affected packages
Package	Affected	Fixed
`ovirt-web-ui` Red Hat:rhev_manager:4.4:el8 From an advisory covering 9 CVEs	before 0:1.9.0-1.el8ev	0:1.9.0-1.el8ev
`ovirt-dependencies` Red Hat:rhev_manager:4.4:el8 From an advisory covering 9 CVEs	before 0:4.5.2-1.el8ev	0:4.5.2-1.el8ev
`apache-commons-compress` Red Hat:rhev_manager:4.4:el8 From an advisory covering 9 CVEs	before 0:1.21-1.2.el8ev	0:1.21-1.2.el8ev
`apache-commons-compress-javadoc` Red Hat:rhev_manager:4.4:el8 From an advisory covering 9 CVEs	before 0:1.21-1.2.el8ev	0:1.21-1.2.el8ev
`@rootio/trim-newlines` Root:npm	before 1.0.0-root.io.1	1.0.0-root.io.11.0.0-root.io.2
`trim-newlines` Root:npm	before 1.0.0-aikido.2	1.0.0-aikido.2
`node-trim-newlines` Ubuntu:18.04:LTS	before 1.0.0-1ubuntu0.18.04.1, plus listed versions 1.0.0-1	1.0.0-1ubuntu0.18.04.1
`node-trim-newlines` Ubuntu:20.04:LTS	before 1.0.0-1ubuntu0.20.04.1, plus listed versions 1.0.0-1	1.0.0-1ubuntu0.20.04.1
`node-trim-newlines` Ubuntu:24.04:LTS	All versions, plus listed versions 3.0.0+~3.0.0-1	None known
`node-trim-newlines` Ubuntu:25.10	All versions, plus listed versions 3.0.0+~3.0.0-1	None known
`node-trim-newlines` Ubuntu:26.10	All versions, plus listed versions 3.0.0+~3.0.0-1	None known
`node-trim-newlines` Ubuntu:26.04:LTS	All versions, plus listed versions 3.0.0+~3.0.0-1	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-33623 is a high vulnerability (CVSS 7.5) in Trim-newlines Project Trim-newlines, published May 28, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.93%, the 87th percentile. Fixed in trim-newlines 3.0.1.

References

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