CVE-2022-25887

Regular Expression Denial of Service (ReDoS)

5.3 MediumFix available

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

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: Low

Exploit likelihood

1.55%Up 0.6 points since Aug 30, 2022

What each source reports

CVE List Score used 5.3

Regular Expression Denial of Service (ReDoS)

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: CVE-2022-25887
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

EUVDEUVD-2022-6537 5.3

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: EUVD-2022-6537
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cgfm-xwp7-2cvr 7.5

Sanitize-html Vulnerable To REDoS Attacks

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: GHSA-cgfm-xwp7-2cvr
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-1333
Updated: 2026-11-02

NVD 5.3

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: CVE-2022-25887
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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-1333
Updated: 2026-11-02

OSV 5.3

Regular Expression Denial of Service (ReDoS)

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: CVE-2022-25887
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-25887 7.5

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: DEBIAN-CVE-2022-25887
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: 2026-11-03

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OSVGHSA-cgfm-xwp7-2cvr 7.5

Sanitize-html Vulnerable To REDoS Attacks

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: GHSA-cgfm-xwp7-2cvr
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-1333
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-25887 5.3

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

Record: UBUNTU-CVE-2022-25887
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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: 2026-11-04

OSVCLSA-2026-1776645373 No score

TuxCare security update for sanitize-html (1 CVE)

TuxCare rebuilt sanitize-html to address 1 CVE. Fixed in 1.27.5-tuxcare.3.

Record: CLSA-2026-1776645373
Updated: 2026-11-02

OSVROOT-APP-NPM-CVE-2022-25887 No score

CVE-2022-25887 in @rootio/sanitize-html - Patched by Root

Root has patched CVE-2022-25887 in the @rootio/sanitize-html package for Root:npm. Multiple fixed versions available.

Record: ROOT-APP-NPM-CVE-2022-25887
Updated: 2026-11-02

OSVUSN-7464-1 No score

jupyter-notebook vulnerability

It was discovered that Jupyter Notebook did not properly parse HTML comments under certain circumstances. An attacker could possibly use this issue to cause a regular expression denial of service (ReDoS).

Record: USN-7464-1
Updated: 2026-11-02

Affected products

apostrophecms sanitize-html

Affected packages

Affected packages
Package	Affected	Fixed
`sanitize-html` npm	before 2.7.1	2.7.1
`sanitize-html` TuxCare:npm	1.27.5-tuxcare.0 up to 1.27.5-tuxcare.3, plus listed versions 1.27.51.27.5-tuxcare.11.27.5-tuxcare.2	1.27.5-tuxcare.3
`node-sanitize-html` Debian:12	before 2.7.1+~2.6.2-1	2.7.1+~2.6.2-1
`node-sanitize-html` Debian:13	before 2.7.1+~2.6.2-1	2.7.1+~2.6.2-1
`node-sanitize-html` Debian:14	before 2.7.1+~2.6.2-1	2.7.1+~2.6.2-1
`@rootio/sanitize-html` Root:npm	before 1.4.2-root.io.1	1.4.2-root.io.11.4.2-root.io.21.4.2-root.io.31.4.2-root.io.41.4.2-root.io.51.4.2-root.io.61.4.2-root.io.71.4.2-root.io.81.4.2-root.io.9
`sanitize-html` Root:npm	before 1.4.2-aikido.9	1.4.2-aikido.9
`node-sanitize-html` Ubuntu:22.04:LTS	All versions, plus listed versions 2.6.1-1	None known
`jupyter-notebook` Ubuntu:Pro:22.04:LTS	before 6.4.8-1ubuntu0.1+esm1, plus listed versions 6.2.0-16.4.5-26.4.5-36.4.5-46.4.8-16.4.8-1ubuntu0.1	6.4.8-1ubuntu0.1+esm1
`node-sanitize-html` Ubuntu:24.04:LTS	All versions, plus listed versions 2.8.0+~2.6.2-1	None known

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Affected packages
Package	Affected	Fixed
`jupyter-notebook` Ubuntu:Pro:24.04:LTS	before 6.4.12-2.2ubuntu1+esm1, plus listed versions 6.4.12-2.26.4.12-2.2ubuntu1	6.4.12-2.2ubuntu1+esm1
`jupyter-notebook` Ubuntu:25.10	All versions, plus listed versions 6.4.13-56.4.13-5ubuntu0.1	None known
`node-sanitize-html` Ubuntu:25.10	All versions, plus listed versions 2.14.0+~2.13.0-1	None known
`jupyter-notebook` Ubuntu:26.10	All versions, plus listed versions 6.4.13-5ubuntu0.1	None known
`node-sanitize-html` Ubuntu:26.10	All versions, plus listed versions 2.14.0+~2.13.0-12.17.0+~2.16.1-1	None known
`node-sanitize-html` Ubuntu:26.04:LTS	All versions, plus listed versions 2.14.0+~2.13.0-1	None known

History

History
Recorded	Changed	Sources
Nov 4, 2026	affected, facts	OSV
Nov 3, 2026	aliases, published	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-2022-25887 is a medium vulnerability (CVSS 5.3) in Apostrophecms Sanitize-html, published August 30, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.55%, the 75th percentile. Fixed in sanitize-html 2.7.1.

References

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